Quantitative Aptitude - Arithmetic Ability Questions

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

If the radius of a circle is increased by 16%, its area increases by

If a1-2a+b1-2b+c1-2c = 12, then 11-2a+11-2b+11-2c value is

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

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

A, B and C invest to start a restaurant. The total investment was Rs 3 lakhs. B invested Rs 50,000 more than A and C invested Rs 25,000 less than B. If the profit at the end of the year was Rs 14,400 then what is C's share of the profit (in Rs)?

The value of x for which the expressions 7x + 13 and 13x - 7 become equal is _____