Question

Father is 4 times as old as his son and sum of their ages is 40.Then the age of his son is:
a.8,b.10,c.12,d.15​

Answer 1

Answer:

The age of the son is a.8

Step-by-step explanation:

Let the age of the son be x and the age of the father be y.

Therefore,y=4x [ According to the first condition]

AND

x+y= 40 [ According to the second condition]

Substituting y=4x in the above equation, we get,

4x+x=40

5x=40

x=40÷5

Therefore, x = 8