Quantitative Aptitude - Arithmetic Ability Questions

If 12x = 192- 112, what is the value of x?

If a - b = 4 and ab = -3, then what is the value of a3- b3?

If compound interest received on a certain amount in the 3rd year is Rs. 1,240, what will be the compound interest (in Rs) for the 4th year on the same amount at 9% rate of interest?

Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

A boy in a train notices that he can count 31 telephone posts in 60 seconds. the distance between two posts is 60 meters. Calculate the speed of the train?

If the profit is 20%, then what will be the ratio of cost price to selling price respectively?

Divide 32 into two parts such that the sum of the square of the parts is 674. What is the value of the parts?