brain teaser

A grandfather is 56 years old and his grandson is 14 years old.
After how many years will the grandfather be twice as old as his grandson?

See the answer

Answer: After 28 years.

Let X be the number of years we are looking for. Then we have, 56 + X = 2(14 + X). Solving for X, we get X = 28.

Facebook Comments

How much did this article help your understanding of this health condition?

0 1 2 3 4 5