Quantitative Aptitude - Arithmetic Ability Questions

A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?

Present age of A is 2 times the present age of B. After 8 years the B's age will be 4 times of C's present age. If C celebrated his fifth birthday 9 years
ago, then what is the present age (in years) of A?

Divide 20 into two parts such that the sum of the square of the parts is 232. What is the value of the two parts?

The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.

In a farm, in addition to 48 hens there are 42 sheep and 11 oxen with some shepherds. If the total number of feet be 224 more than the number of heads, find the number of shepherd.

The difference between cost price and selling price is Rs 221. If profit percentage is 17%, then what is the selling price (in Rs)?

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

Find two numbers such that their mean proportion is 8 and third proportion is 64.