Question

Five years ago, john's age was half of the age he will be in 8 years. how old is he now?

Answer 1

John age is 18 years

Answer 2

Given - Five years ago age

Find - Present age

Solution - The present age of John is 18 years.

Let the present age of John be x.

The age of John five years ago = x - 5

The age of John after eight years = x + 8.

These age are related to each other as -

x - 5 = (x + 8)/2

Solving the formed equation to find the value of x.

2x - 10 = x + 8

2x - x = 10 + 8

x = 18

Thus, the present age of John is 18 years.