Bank Math

A lamp is manufactured to sell for $35.00, which yields a profit of 25% of cost. If the profit is to be reduced to 15% of cost, what will be the new retail price of the lamp?

How many integers between 1 and 100 are divisible by 3 but not by 5?

Mira is 30 times older than her son. 18 years later she will be thrice as old as her son. What is Mira's present age?

If a -1/a = 2 what is a³ – 1/a³?

A card is randomly drawn from a deck of 52 cards. What is the probability of getting a king or Queen?

If A : B = 5 : 4 and A : C = 6 : 5 then, C : B = ?

In a club 50% of the male voters and 80% of the female voters voted for candidate A. If candidate A received 70% of the total votes, what is the ratio of male to female voters?

A can do a work in 20 days, and B in 30 days. They work together for 6 days. How much of the work is left?

In New jersey 90% of the population own a car, 15% own a motorcycle, and everybody owns one or the other or both. What is the percentage of motorcycle owners who own cars?

20% ডিসকাউন্টের পরে একটি বইয়ের খরচ 400 টাকা দাঁড়ায়। তবে বইটির প্রকৃত মূল্য কত?

If a light flashes every 6 seconds, how many times will it flash in 3/4 of an hour?

A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod. Find the number of balls.

A milkman pays Tk. 6.40 per liter of milk. He adds water and sells the mixture at Tk. 8 per liter. By doing this, he makes 37.5% profit. Find the proportion of water to milk received by the customer.

If 3/p = 6 and 3/q = 15 then p - q = ?

The difference between two numbers is 5 and the difference between their squares is 65. What is the larger number?

There are 8 marbles in a box 6 red and 2 black. If you randomly pick 2 marbles simultaneously what is the probability that you will get one red and 1 black marble?

How many litres of a 90% of concentrated acid needs to be mixed with a 75%. Solution of concentrated acid to get a 30 liter solution of 78% concentrated acid?

In a row in the theatre the seats are numbered consecutively from T1 to T50. Sumon is sitting in seat T17 and Shihab is still sitting in seat T39. How many seats are there between them?

A man buys an article for 10% less than its value and sells it for 10% more than its value. His gain or loss percentage is-

A man walks 10m east but runs 5m west every day. How many days will it take him to cross a building 380m east?