Quantitative Aptitude - Arithmetic Ability Questions

If xy = 48 and x2 + y2 = 100, then (x + y) is

A can do a piece of work in 10 days and B in 12 days. With help of C, they finish the work in 4 days. In how many days C alone can do the same work?

Find the LCM of 3.2, 2.72, 1.28 and 1.44

If (x + y + z) = 12, xy + yz + zx = 44 and xyz = 48, then what is the value of x3 + y3+ z3?

The area of the largest sphere ( in cm2) that can be drawn inside a square of side 18 cm is

If the ratio of the cost price and the selling price of an article be 4:5, then the percentage of profit is:

A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

A sum of money is invested at 20% compound interest (compounded annually). It would fetch Rs. 723 more if interest is compounded half-yearly. The sum