Question

The sum of the ages of a father and his son is 72 years . After 2 years , father will be 4 years less than 3 times the age of his son​

Answer 1

Answer:

18

Step-by-step explanation:

f = father's present age

s = son's

:

"The sum of ages of a father and his son is 72 years."

f + s = 72

:

" After 2 years .father will be 4 years less than 3 times the age of his son"

f + 2 = 3(s+2) - 4

f + 2 = 3s + 6 - 4

f + 2 = 3s + 2

f = 3s + 2 - 2

f = 3s

:

.find their present ages.

In the 1st equation replace f with 3s

3s + s = 72

s = 72/4

s = 18 is the son's age