Bank Math

If A's salary is 30% more than B's, then how much percent is B's salary less than A's?

(21 - 30) : Read the following questions carefully and choose the right answer.
21. The diameters of two circles are the side of a square and the diagonal of the square. The ratio of the area of the smaller circle and the larger circle is-

Two numbers are in the ratio 5:4 and their difference is 10. What is the smallest number?

At simple interest of 5%, 6% and 8% for three consecutive years, the interest earned is Tk. 760. Find The principle? 

A ferry can carry 24 buses or 36 cars at a time. If there are 18 buses on the ferry, how many cars can be loaded onto it?

A two-digit number has 3 in its unit digit. The sum of its digits is one seventh of the number itself. What is the number?

In your wallet, there are Tk 500, Tk 200 and Tk 100. notes in the ratio 5 : 9 : 4, amounting to Tk 18,800. Find the number of each note respectively.

A fruit seller had some apples. He sold 40% of the apples and still has 420 apples left. Originally he had :

A train, 150 meter long and running at a speed of 60 km per hour, takes 30 seconds to cross a bridge. What is the length (in meter) of the bridge?

A pole 6 m high casts a shadow 2√3m long on the ground, then the Sun’s elevation is?

A man walking at the rate of 4 km/hr crosses a bridge in 15 minutes. The length of the bridge (in meters) is-

What is the greatest possible area of a triangle with one side of length 7 and another side of length 10?

If the ratio of speed of doing work of three persons is 1 : 3 : 5, what is the ratio of time taken by these people to do the same amount of work? 

A rectangular sheet of paper, 10cm long and 8cm wide has squares of side 2cm cut from each of its corner. The sheet is then folded to form a tray of depth 2cm. What is the volume of this tray?

A jar contains red balls and green balls in the ratio 3 : 1. If the jar contains only the two types of balls, which of the following cannot be the number of balls in the jar?

In how many ways can 5 people from a group of 6 people be seated around a circle table?

When 4 is added to 1/2 of a number, the result is 14. What is the number?

In a class of 78 students, 41 are taking French, 22 are taking German and 9 are taking both courses. How many students are not enrolled in either course?

Jennifer flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?

The line perpendicular to y = x - 2 is