book Maths Puzzle Numerical Ability

X is 6 years younger than Y, and the average of their ages is twice X age 5 years ago, how old are they?

Read Solution (Total 0)

book Other Question

Two vats contains cream, one sample tested 8% butterfat and the other tested 16% butterfat. How much cream should be taken from each to produce a 5 liters mixture w/c will test 12% The ratio of the volume of two spheres is 216:125. What is the ratio of their diameters?