Question

Ramlal is four times as old as his son. Four years hence, the sum of their ages will be 43 yrs. The present age of the son is?

Answer 1

Let the age of son be x years.

Then age of father would be ( 4 times of x) 〓 4x years.

Four years hence,

Age of son 〓 ( x + 4) years.

Age of father 〓 ( 4x + 4) years.

According to the question,

Sum of their ages 〓 ( x + 4) + ( 4x + 4) years. 〓 5x + 8 years 〓 43 years.

If 5x + 8 〓 43 years.

5x 〓 43 - 8 〓 35 years.

X 〓 ( 35 / 7 ) 〓 5 years.

Therefore, the present age of son is 5 years.

Answer 2

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Let Ramlal’s age be R and that of his son, S, now.

R = 4S

R+4+S+4 = 43, or

R+S = 35

4S+S=35

5S=35

S=7

Ramlal is 28 years while his son is 7 years, now. Answer.