Quantitative Aptitude - Arithmetic Ability Questions

If a+1a2 = 3, then the value of  a3+1a3 is

If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)

If (x - 4) (x2 + 4x + 16) = x3 - P, then P is equal to

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

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)?

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

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

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?