Question

A grandfather is 51, while his grandson is 11. in how many years will the grandfather's age be twice the age of his grandson?

Answer 1

Answer: 29 years

Step-by-step explanation: if the grandfather is 51 when the grandson is 11 then the grandfather was 40 when his grandson was born. This mean the grandfather will be 80 when the grandson is 40. 40-11=29

Answer 2

29 years

Explanation:

In 29 years the grandson will be 40 and the grandfather will be 80. 80 is twice as much as 40.