Bank Math

The length of a rectangle is increased by 25%. By what percentage should the width be decreased so that the area of the rectangle remains unchanged?

A sum of TK. 600 amounts to TK. 720 in 4 years at simple interest. What will it amount to if the rate of interest is increased by 2%?

If both x and y are prime numbers, which of the following CANNOT be the product of x and y?

If sin 45° = √2A, then A = ?

If one of the roots of the quadratic equation x² + mx + 24 = 0 is 1.5, then what is the value of m?

At what profit percent must an article be sold so that by selling at half that price, there will a loss of 30%?

Rahim can do a piece of work in 20 days. Karim is 25% more efficient than Rahim. The number of days taken by Karim to do the same piece of work is

In set S there are four numbers. Three of the numbers are 13, 29 and 41, and the fourth number is X. If the mean of the set is less than 25, what could be the value of X?

Two numbers are in the ratio 3:7. If 6 be added to each of them, then they are in the ratio 5:9. Find the numbers?

If in ΔABC, AB = 6cm, BC = 12cm and CA = 6√3cm, then the measure of ∠A is-

What is the original price of a T-shirt, if the sale price after 15% discount is 272?

If 12 carpenters, working 6 hours a day, can make 460 chairs in 24 days, how many chairs will 18 carpenters make in 36days, each working 8 hours a day?

Two numbers when divided by a certain divisor give remainder 35 and 30 respectively and when their sum is divided by the same divisor, the remainder is 20, then the divisor is :

A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount?

A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to 8 times itself?

A water filter can be filled with 8 jugs of capacity 1.3 liters each. How many jugs are required to fill the same filter, if the capacity of the jug is 0.8 liters?

1 year ago the ratio between A's and B' s salary was 3 : 4. Ratios of their individual salaries between last year's and this year's salaries are 4 : 5 & 2 : 3 respectively. At present the total of their salary is TK. 4160. How much is the salary of A now?

√(11² + 3⁴ × 7 - 13² +10) =? 

If 2^x = 3^y = 6 ^{- z}, find the value of (1/x) + (1/y) + (1/z).

In which one of the following choices, p must be greater than q?