Question

John is 31 years younger than his dad. The sum of their ages is 53 years. How many years old is John's dad?

Answer 1

42 is John’s dads age John is 11

Answer 2

Required Answer

Current age of John's dad is 42 yrs.

`\to \: \bf{Solution}`

Let the current age of John's dad be 'x' yrs.

In that case,

• John's current age = (x - 31) yrs.

According to the question

`\sf \longrightarrow \: x + (x - 31) = 53`

`\sf \longrightarrow \: 2x - 31 \: = \: 53`

`\sf \longrightarrow \: 2x = 53 - 31`

`\sf \longrightarrow \: x = (84)/(2)`

`\bf \longrightarrow \boxed{ \red{\bf x = 42}} \: \cdots\star`

`\sf`

Therefore, the current age of John's Dad is 42 years.

`\rule{200pt}{2pt}`

Although not asked, we can find John's age too i.e (x - 31) = (42 - 31) = 11 years old.