Quantitative Aptitude - Arithmetic Ability Questions

2 litre of pure alcohol is added to 6 litre, 40% alcohol solution. The percentage of water in the solution is _____ .

If p/q = r/s = t/u = √5, then what is the value of [(3p2 + 4r2 + 5t2)/(3q2 + 4s2 + 5u2)]?

If 5+x+5-x5+x-5-x = 3,then what is the value of x ?

A Number is increased by 20%. To get back to the orignal number, the increased number is to be reduced by

The side of an equilateral triangle is 14 cm. Find its area (in sq.cm).

If a + b = 3 and ab = -4, then what is the value of a3 + b3?

If 10x/3 + 5/2(2 - x/3) = 7/2, then the value of x is?

The point Q(a,b) is first reflected in y­axis to Q1 and Q1 is reflected in x­axis to (­6,2). The co­ordinates of point Q are