Quantitative Aptitude - Arithmetic Ability Questions

If X+Y=3,XY=2, find the value of X3-Y3

Diameter of a car wheel is 21 cm. A car driver moving at the speed of 66 km/hr takes 36 seconds to reach a destination. How many revolutions will the wheel make during the journey?

In a mixture, ink and water are in the ratio of 8 : 5. If 24 litres of water is added to the mixture, then the new ratio becomes 8 : 11. What is the total quantity (in litres) of water in the new mixture?

A sum of 2,000, invested at the rate of 8.5% simple interest per annum for 6years will yield an interest of

Ram's father is twice as old as Ram is. Eight years ago the age of Ram's father was 2.5 times his age. What is Ram's current age?

A line passing through the origin perpendicularly cuts the line 3x - 2y = 6 at point M. Find M?

If 14/3 + (1/2)(x - 7/3) = -2x/3, then the value of x is?

If x + y = 12 and x2 + y2 = 94, then xy is