Question

the present age of father is three years less than five times the age of his son. after 5 years the age of father will be 3 years more than three times the age of the son. the present age of son is what?
ans.. a. 8 years. b. 7 years
c. 6 years. d. 9 yearrs.

Answer 1

Answer:

Step-by-step explanation:

Let son present age be x

Father present age = 5x-3

After 5yrs

Father:

(5x-3)+5

=5x+2

Son:

x+5

Three years more than 3 times son's age after 5yrs

[3(x+5)]+3

Equation:

5x+2 = [3(x+5)]+3

5x+2 = 3x+15+3

5x+2 = 3x+18

5x-3x = 18-2

2x = 16

x = 8

There fore son's present age is 8yrs

Answer 2

AnSwEr:

Let age of son

Then,age of father

According to the question,

5x-3+5=3(X+5)+3

=> 5x+2=3x+15+3

=>. 2x=16

:. x=8

Hence age of son = 8yr