Explanation:

If it takes 50 workers 4 hours to dig a hole, how long should it take 30 workers to dig the same hole? Correct Answer 6 hrs, 40 mins Here, 4 hours = 240 minutes Now,  50 workers can dig the hole in 240 minutes So, 30 workers can dig the hole in 240×50/30 = 400 minutes = 6 hours 40 minutes

Explanation:

If 40% of all women are voters and 52% of the population are women, what percent of the population are women voters? Correct Answer 20.8 মনে করি, মোট জনসংখ্যা = 100 জন Women দের সংখ্যা = 52 জন Women দের ভোটার সংখ্যা = 52×(40/100) = 20.8

Explanation:

A man walks 30 minutes at an average speed of 3 miles/hour. He waits 10 minutes for a bus, which bring him back to his starting point at 3:15. If he began his walk at 2:25 the same afternoon, find the average speed of the bus? Correct Answer 9 mph Here,  2:25 pm to 3:15 pm = 50 minutes Time taken by bus = 50 - (30 + 10) = 10 minutes = 10/60 hour = 1/6 hour The man walked for = 30 minutes = 30/60 hour = 1/2 hour He walked = 3×1/2 = 3/2 miles So,  speed of the bus = 3/2 ÷ (1/6) = 9 miles per hour

Explanation:

The angles of a triangle are in the ratio of 2 : 3 : 4. The largest angle in the triangle is : Correct Answer 80 degree the sum of all angles of a triangle is 180 . 2x + 3x + 4x = 180 = > 9x = 180  = > x = 180/9 ∴ x = 20 the largest angle is 20×4 = 80 degree

Explanation:

Coffee A costs 75 cents per pound. It is mixed with Coffee B, which normally costs 80 cents per pound, to form a mixture that costs 78 cents per pound. If there are 10 pounds of the mix, how many pounds of Coffee A were used in the mix? Correct Answer 4 Let the amount of coffee A and coffee B mixed be A  and (10 - A)  pounds respectively. Now,  A×75 + (10 - A)×80  = 10×78 or,  75A + 800 - 80A = 780 or,  80A - 75A = 800 - 780 or,  5A = 20 or,  A = 4 pounds

Explanation:

Murad bought equal numbers of 20-paisa and 30-paisa stamps. If the total cost of the stamps was Tk. 10.00, What was the total number of stamps bought? Correct Answer 40 ধরা যাক মুরাদ x সংখ্যক ২০ পয়সা টিকেট এবং x সংখ্যক ৩০ পয়সা টিকেট কেনেছেন। একটি ২০ পয়সা টিকেটের দাম ০.২০ টাকা এবং একটি ৩০ পয়সা টিকেটের দাম ০.৩০ টাকা। সমস্ত টিকেটের মোট দাম ১০.০০ টাকা হলে, আমরা নিচের সমীকরণটি লেখতে পারি:0.20x + 0.30x = 10.00এই সমীকরণটি সহজ করতে, আমরা লিখতে পারি:0.50x = 10.00সুতরাং,x = 10.00 / 0.50x = 20তাই মুরাদ ২০টি ২০ পয়সা টিকেট এবং ২০টি ৩০ পয়সা টিকেট কেনেছেন, মোটমতে ৪০টি টিকেট কেনা হয়েছে।

Explanation:

What is the minimum number of apples that must be added to the existing stock of 264 apples so that the total stock can be equally distributed among 6,7 or 8 persons? Correct Answer 72 The least common multiple of 6, 7 and 8 is 168. To distribute the apples among the persons, the number of apples must be multiple of 168. Now, twice of 168 = 168×2 = 336. So, minimum number of apples must be added = 336 - 264 = 72

Explanation:

If 15 men working independently and at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men working independently and at the same rate manufacture in 40 minutes? Correct Answer 54 Here, 1 hour = 60 minutes Now, 15 men in 60 minutes can manufacture 27 baskets Then, 45 men in 40 minutes can manufacture = 27×45×40/(15×60) = 54 baskets

Explanation:

The difference between two positive numbers is 16. If the smaller of these two numbers is 3/5 of the larger, what is the value of the smaller number? Correct Answer 24 Let the larger and smaller numbers be X and 3X/5 respectively. Then,   X - 3X/5 = 16 or,  (5X - 3X)/5 = 16 or,  2X = 80 or,  X = 40 So,  the smaller number, 3X/5 = 3×40/5 = 24

Explanation:

If 2x=7 and 3y=2, then what is 9xy? Correct Answer 21 (2x)(3y) = 7×2 = > 6xy = 14 Multiply both sides by 3/2 ∴9xy = 21

Explanation:

What value of x satisfies the equation x-1 = 1-x? Correct Answer 1 Here,  x - 1 = 1 - x or,  x + x = 1  + 1 or,  2x = 2 or,  x = 1

Explanation:

If the total surface area of a cube is 24, what is the volume of the cube? Correct Answer 8 Let the side of the cube be a. Then, surface area, 6a2  = 24 or,  a2  = 24/6 = 4 or,  a = √4 =  2 So, volume of the cube, a3  = 23  =  8

Explanation:

A company makes a profit of 6% on its first Tk. 1,000 of sales each day and Tk. 55 per thousand on all sales in excess of Tk. 1,000 of that day. How much profit will the company make in a day when sales are Tk. 6,000? Correct Answer 335 Profit on first 1000 TK sale = 6% of 1000 = 60 TK. Profit on the rest (6000 - 1000 = 5000) TK sale = 55×5000/1000 = 275 TK. Total profit = 60 + 275 = 335 TK

Explanation:

Four partners distribute their income amongst themselves in the proportions 1:2:3:4. What percent of the income is received by the first partner? Correct Answer 10 Income received by the first person = 1 / (1 + 2 + 3 + 4) × 100% = 10%

Explanation:

If 2x+7 =12, then what is 4x-7? Correct Answer 3 ATQ,         2x + 7 = 12 So, x = (12 - 7)/2         = 5/2. Now, 4x - 7 = (4×5)/2 - 7                    = 3

Explanation:

15 students took a test that was scored from 0 to 100. If exactly 10 students scored 75 of more on the test, find the lowest possible value for the average of the scores of all 15 students. Correct Answer 50 Total score of 10 students if scored exactly 75 each = 10×75 = 750 Total score of 5 student if scored minimum or 0 = 0 Total score of 10 + 5 = 15 students = 750 + 0 = 750 Average of the 15 students = 750 / 15 = 50

Explanation:

An employer pays 3 workers X, Y and Z a total of Tk. 610 a week. X is paid 125% of the amount Y is paid and 80% of amount Z is paid. How much does X make a week? Correct Answer 200 Let their payments be X, Y and Z respectivey. Now,  X = 125/100 of Y     or,   Y = 100/125 of X = 4X/5 Again,   X = 80/100 of Z    or,   Z = 100/80 of X = 5X/4 Now,   X + Y + Z = 610 or,  X + 4X/5 + 5X/4 = 610 or,  (20X + 16X + 25X) / 20 = 610 or,  61X = 610 × 20 or,  X = 610 × 20 / 61 = 200 TK

Explanation:

If the average of 9 consecutive integers is 0, what is the average of the last 4 of these integers? Correct Answer 2.5 রক্ত দানের পর শারীরিকভাবে দুর্বল অনুভূত হতে পারে। আর ক্লান্তি বা ঘুম ঘুম ভাব আসে সাধারণত পরিশ্রম করার পর। সুতরাং অর্থ অনুযায়ী (b) - ই সঠিক উত্তর।

Explanation:

If x/y = 3/4, then what is the value of x+y/y? Correct Answer 7/4 প্রশ্নোক্ত Sentence টি Present Indefinite Tense এ থাকায় ‘always’ - ই সঠিক। কারণ ‘always’ Present Indefinite Tense - কে নির্দেশ করে। এছাড়া ‘every week’ উক্ত tense কে নির্দেশ করলেও তা বাক্যের অর্থের সাথে সামঞ্জস্যপূর্ণ নয়।

Explanation:

If the radius of a circle is decreased by 30 percent, by what percent will the area of the circular region decrease? Correct Answer 51% Initial radius = R Initial area =  π R2 New radius = R - 30% of R = R - 0.3R = 0.7R New area =  π (0.7R)2 = 0.49 π R2 Decrease in area = (πR2 -   0.49πR2) / (πR2) × 100% = 51%

Explanation:

In a library system with 6 branches, 60 workers are employed. If no library has fewer than 7 workers and no more than 11, what is the minimum number of workers in any 2 of the branches? Correct Answer 16 Maximum number of workers possible to remain in any 4 branches = 4×11 = 44 Workers remaining = 60 - 44 = 16 which can be divided between the two remaining branches in such a way that there is no fewer than 7 workers in any of the two branches. So, minimum 16 workers can remain in any 2 branches.

Explanation:

If 8 men can do a job in 12 days, what is the percentage change in the number of days required to do the job if 2 men are released? Correct Answer 33.33% Remaining men = 8 - 2 = 6 8 men can do the job in 12 days So, 6 men can do te job in 12×8/6 = 16 days Increase percentage in number of days = (16 - 12) / 12 × 100% = 33.33%

Explanation:

What is the total number of member countries in the United Nations? Correct Answer 192 কোনো ব্যক্তি বা বস্তুর support নিয়ে কোনো কিছু করা বোঝাতে ‘on’ preposition ব্যবহৃত হয়। সুতরাং সঠিক উত্তর (c)।

Explanation:

In which city was the last OIC Conference held? Correct Answer Egypt The 13th meeting took place in Istanbul, Turkey in April 2016 and 50 states attended the meeting. The OIC is the second biggest international governmental organization after the UN, with membership of 57 states from four continents. It represents the Islamic world and seeks to protect its interests.

Explanation:

Who is the Defence Secretary of USA? Correct Answer Robert Gets Robert Michael Gates (born September 25, 1943) is an American intelligence analyst, and university president who served as the 22nd United States secretary of defense from 2006 to 2011. He was originally appointed by President George W. Bush and was retained for service by President Barack Obama. Gates began his career serving as an officer in the United States Air Force but was quickly recruited by the Central Intelligence Agency (CIA). Gates served for 26 years in the CIA and the National Security Council, and was Director of Central Intelligence under President George H. W. Bush.

Explanation:

If 4x is 9 greater than the sum of x and 3y, then x is how much greater than y? Correct Answer 3 Here, 4x = x + 3y + 9 or,  4x - x - 3y = 9 or,  3x - 3y = 9 or,  3(x - y) = 9 or,  (x - y) = 9/3 = 3 So, x is 3 greater than y.

Explanation:

The total budget outlay for FY 2004-05 is : Correct Answer Tk. 57,248 crore Sentence - এর অর্থানুসারে routine administration - এর উপর জোর দেয়া বোঝাতে ‘lay stress’ [laid (p.f.) ] সঠিক এবং তুলনা বোঝাতে ‘rather than’ perfect। সুতরাং (d) সঠিক উত্তর।

Explanation:

The name of the parliament of USA is : Correct Answer Congress Exodus – বহুলোকের একত্রে বহির্গমন; অভিনিষ্ক্রমণ। Influx – অভ্যন্তরমুখী প্রবাহ; আগমন। Homecoming – গৃহাগমন; ঘরে ফেরা; স্বগৃহে প্রত্যাবর্তন। Return – প্রত্যাবর্তন; ফিরে যাওয়া। Restoration – পুনরুদ্ধার; পুনঃপ্রতিষ্ঠা। সুতরাং EXODUS - এর opposite হচ্ছে Influx.

Explanation:

What is the fiscal years of Bangladesh? Correct Answer July-June Enormous – প্রচুর। Soft – নরম; মসৃণ ও কোমল। Average – গড়ে; গড়পড়তা মান; মধ্যমান। Tiny – অতি ক্ষুদ্র। Weak – দুর্বল। সুতরাং ENORMOUS - এর opposite হচ্ছে Tiny.

Explanation:

Where is the headquarters of Islamic Development Bank (IDB)? Correct Answer Jeddah Lethargic অলস; নিশ্চেষ্ট। Energetic – কর্মশক্তিসম্পন্ন; উদ্যমী। Lazy – অলস; শ্রমবিমুখ। Indifferent – উদাসীন; অনীহ; নিঃস্পৃহ। Bored – ক্লান্ত বা বিরক্ত। সুতরাং LETHARGIC - এর opposite হচ্ছে Energetic.

Explanation:

Which Asian country belongs to the G-8 countries? Correct Answer Japan The Group of Eight + Five (G8 + 5) was an international group that consisted of the leaders of the heads of government from the G8 nations (Canada, France, Germany, Italy, Japan, Russia, the United Kingdom, and the United States), plus the heads of government of the five leading emerging economies (Brazil, China, India, Mexico, and South Africa). In March 2014, Russia was cast out of the Group of 8 due to its involvement in the 2014 Crimea crisis in Ukraine, so the G8 + 5 in its original form is unlikely to reconvene with Russia present.

Explanation:

Letter of Credit (LC) is a banking instrument used for : Correct Answer Export-Import A letter of credit, or "credit letter" is a letter from a bank guaranteeing that a buyer's payment to a seller will be received on time and for the correct amount. In the event that the buyer is unable to make a payment on the purchase, the bank will be required to cover the full or remaining amount of the purchase.

Explanation:

Which authority controls the stock markets of our country? Correct Answer Securities & Exchange Commission Enlarge – বিস্তৃত বা প্রসারিত করা; বড় করা। Inflate – ফোলানো; স্ফীত করা; মুদ্রাস্ফীতি ঘটানো। Expand – প্রসারিত করা বা হওয়া; ছড়ানো বা ছড়িয়ে পড়া। Bump up – বৃদ্ধি করা। Contract – সংকুচিত করা বা হওয়া। সুতরাং ENLARGE - এর opposite হচ্ছে contract.