Bank Math

Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.

A boat goes 8 km in one hour along the stream and 2 km in one hour against the stream. The speed in km/hr of the stream is _____

In a mixture of 45 liters, the ratio of milk and water is 4 : 1. How much water must be added to make the mixture ratio 3 : 2?

Jeff takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long?

At the beginning of a class period, half of the students in a class go to the library. Later in the period, half of the remaining students go to the computer lab. If there are 8 students remaining in the class, how many students were originally in the class?

A trader sells his goods at a discount of 20%. He still makes a profit of 25%. If he sells the goods at the marked price only, his profit will be:

If n = (33)⁴³ + (43)³³, what is the units digit of n?

Find the compound interest at the rate of 10% per annum for four years on the principal which in four years at the rate of 4% per annum gives Tk. 1600 as simple interest.

How many prime number are in between 45 to 72?

What is the average of the following numbers: 35.5, 32.5, 34.0, 35.5 and 34.5?

If the square of the sum of two numbers is equal to 4 times of their product, Then the ratio of these numbers is: 

Think of a number and then double the number. Add 6 and then multiply the number by 10. Now divide the number by 20, then subtract the number you first thought of. What is the result?

Mr. Tamal purchased stocks for Tk.1,500 and sold 2/3 of it after its value doubled. He sold the remaining stock at 5 times of its purchase price. What is the total profit?

Which of the number below is not equivalent to 4%?

If the average of 5 consecutive number is 12, what is the sum of the least and the greatest of the integers?

A hall is 15m long and 12m broad. If the sum of the areas of the floor and the ceiling is equal to of the areas of four walls, the volume of the hall is:

The sum of first 17 terms of the series 5, 9, 13, 17, ............ is

The difference between the length and the breadth of a blackboard is 8cm. If the breadth is decreased by 4cm and the length increased by 7cm, the area remains the same. Find the dimensions of the blackboard?

If p and n are integers such that p > n > 0 and p² - n² = 12, which of the following value of p - n?

A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?