Bank Math

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

If the sum of x and its multiplicative inverse is 3, then x³ + 1/x³ = ?

A motorist travels to a place 150 km away at in average speed of 50 km and returns at 30 km per hour. His average speed for the whole journey in km per hour is:

A man spent 1/2 of his money and then lost 1/4 of the reminder. He was left with Tk. 3,600. How much did he start with?

A man purchases two clocks A and B at a total cost of Tk. 650. He sells A with a 20% profit and B at a loss of 25% and gets the same selling price for both clocks. What are the purchasing prices of A and B respectively?

In June a baseball team that played 60 games had won 30% of its games played. After a phenomenal winning streak this team raised its average to 50%. How many games must the team have won in a row to attain this average?

A triangle has a perimeter 13. The two shorter side, have integer lengths equal to x and x + 1. Which of the following could be the length of the other side.

A short distance athlete has taken 60 seconds to cover 100 meters. If he makes 30 steps in 9 seconds, how many steps has he taken in that time?

How many poles can be erected along fence of 200 feet at equal distance of 20 feet?

The value of √(10 + √(25 + √(108 + √(154 + √225)))) is:

Jashim and Imran start walking from A to B at 5 and 3 km per hour respectively. Jashim reaches B and starts back for A. How far from B will he meet Imran if the distance between A and B is 32 km?

A school has only four classes having 10, 20, 30 and 40 students respectively with pass percentage of 20%, 30%, 60% and 100% respectively. Find the pass percentage of the entire school. 

The ratio of male students to female students in a class is 13 to 19. If there are 224 people in the class, including one teacher, one administrator and thirty evaluations. How many people in the class are male students?

Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is

Find out the wrong number in the series: 190, 166, 145, 128, 112, 100, 91

How many '8' will you pass on the way when you count from 1 to 100?

If x= 10 which of the following has the minimum value?

A worker was hired for 7 days. Each day, he was paid Tk. 10 more than what he was paid for the previous day of work. the total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his staring pay?

To represent a family budget on a circle graph, how many degrees of the circle should be used to represent an item that is 20% of the total budget?

If principal P becomes Q in 2 years when interest R% is compounded half-yearly. And if the same principal P becomes Q in 2 years when interest S% is compound annually, then which of the following is true ?