# What is Father Present Age?

After five years, the age of a father will be thrice the age of his son, whereas five years ago, he was seven times old as his son was what is father’s present age?

- 35 years
- 40 years
- 45 years
- 50 years

**Answer: (2) 40 years.**

**Explanation:-**

Let be the age of son is X years and age of father is Y years.

According to the question,

5 years after –

Y + 5 = 3(X + 5)

Y + 5 = 3X + 15

Y – 3X = 10 …………….(1)

5 years before –

Y – 5 = 7(X – 5)

Y – 5 = 7X – 35

Y – 7X = -35 + 5

Y – 7X = -30 ………………….. (2)

Solve equation (1) & (2)

X = 10

Put the value of X = 10 in equation (1)

Y – 3 x 10 = 10

Y – 30 = 10

Y = 10 + 30

Y = 40 years.

Hence, the the present age of father is 40 years.