Explanation:

A 10% monthly salary increase resulted in a Tk. 9000 per year increase in salary for an employee. What was his monthly salary before the increase ? Correct Answer Tk. 7500 Yearly increase = 9000 tk Monthly increase = 9000/12 = 750 tk 10% of Salary is = 750 tk 100% of Salary is = (750×100)/10 = 7500 tk

Explanation:

Three individuals contributed Tk. 8000 each toward the purchase of a computer. If they bought the computer on sale for Tk. 19500 plus 10% sales tax, how much money should be refunded to each individual ? Correct Answer Tk. 850 Total contribution = 3 x 8000 = 24000 TK Cost of computer = 19500 + 10% of 19500 = 19500 + 1950 = 21450 TK. Excess contribution = 24000 - 21450 = 2550 TK. Refund to each = 2550/3 = 850 TK.

Explanation:

How much interest will Tk. 1000 earn in one year at an annual interest rate of 20% if interest rate is compounded every 6 months? Correct Answer 210 A = P ( 1 + r/2)2n and, C.I = A - P Where, P = principal R = rate in percent p.a.( per annum i.e. annually) n = number of years. Here, P = 1000, R = 20% and n = 1 year. Amount after 1 year = P ( 1 + r/2)2n = 1000 ( 1 + 0.20/2)2*1 = 1000 ( 1 + 0.1)2 = 1000 (1.1)2 = 1000 x 1.21 Amount = 1210 ∴Compounded Interest = A−P. C.I = 1210−1000 C.I = 210

Explanation:

If x and y are consecutive positive integers which of the following must be an even integer? Correct Answer xy As x and y are consecutive positive integers. Let , x = 1 and y = 2,    As we know that, odd × even = even so, xy = 1×2 = 2

Explanation:

A mixture of 20 sprit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25% Correct Answer 4 Now water is 2 L and Spirit 18 L Let's add x L of water, so 1/4 = (2 + x)/(20 + x) x = 4 L

Explanation:

An article when sold at a gain of 5% yields Tk. 15 more than when sold at a loss of 5%. Its cost price would be__ Correct Answer Tk. 150 At, 5% gain, selling price = 105 Tk. Again, 5% loss, then selling price = 95tk Difference of both price = ( 105 - 95) tk = 10 tk Selling price 10 tk more than cost price = 100 tk selling price 15 tk more than cost price ( 100×15)/10 = 150 tk.

Explanation:

If ax=b, by=c and cz=a, then the value of xyz is __ Correct Answer 1 b = ax  = (cz )x = ((by )z )x = bxyz ∴xyz = 1

Explanation:

when a certain number is divided by 7, the remainder is 0. if the remainder is not 0 when the number is divided by 14, then the remainder must be __ Correct Answer 7 The number should be multiple of 7 Let, the number be 21 Now, (21/7) = 3, reminder 0 And (21/14) = 1, reminder 7

Explanation:

A gardrn of 100 m length and 60 m width has a walkway of 2 m width hon every side. what is the area of the area of the garden , in square meter , excluding the walk way? Correct Answer 5376 Area of the garden including walkway = ( 100 × 60 ) = 6, 000 sq.m Area of garden excluding walkway = ( 100 - 4 ) ×( 60 - 4 ) = 96 × 56 = 5376

Explanation:

The lengths of sides of a triangle are in the ratio of 3 to 5 to 6. If the perimeter of the triangle is 70, what is the length of the longest side? Correct Answer 30 Let the sides of the triangle are 3x,5x and 6x Given perimeter(3x + 5x + 6x) = 70       = > 14x = 70       ∴ x = 5 So longest side of the triangle is 6       = 6×5 = 30

Explanation:

If two planes leave the same airport at 1 : 00 PM, how many miles apart will they be at 3 : 00 PM, if one travels directly north at 150 mph and the other travels directly west at 200 mph? Correct Answer 500 miles The paths of the planes create right triangle, with the distance between them equaling the hypotenuse of the triangle. The distance of the first plane from the airport at 3:00 PM (2 hours after departure) is 2 x 150 = 300. The distance of the second plane from the airport at 3:00 PM (2 hours after departure) is 2 x 200 = 400. Thus, the distance between the two planes is 500, (since we have a 300 - 400 - 500 right triangle.)

Explanation:

One dozen eggs and ten pound of apples are currently of the same price . if the price of a dozen eggs rises by 10% and that of apples rises by 2% how much more will it cost to buy a dozen of eggs and ten pounds of apples? Correct Answer 6% As same price, Let one dozen eggs = 100 ten pounds of apples = 100 So total amount 200 Eggs price rises 10% = 100 + 10 = 110 Apples price rises 2% = 100 + 2 = 102 Rises total amount 212 Just rises amount 12 So cost price will 12×100/200 = 6% Ans: 6%

Explanation:

Transparency International is based in _ Correct Answer Berlin কৃতি → কৃতিত্ব, দায়ী → দায়িত্ব, প্রতিযোগী → প্রতিযোগিতা, মন্ত্রী → মন্ত্রিত্ব, সহযোগী_সহযোগিতা

Explanation:

The[ triangular base of a prism is a right triangle of sides a and b = 2a . The height h of the prism is equal to 10 mm and its volume is equal to 40 mm3 , what will be the lengths of the sides a and b of the triangle ? Correct Answer 2 mm and 4 mm Bangladesh is the largest country receiving Japan's grant aid in the form of the debt relief.