Question

Five years hence the age of minal will be three times that of his son fiveyrs ago .Minal's age was seven times that of his son .What r their present age??​

Answer 1

Answer:

Let

The present age of man=x

The present age of son=y

A.to.q

1 case: (x+5) = 3(y+5)

x+5=3y+15

x-3y=15-5

x-3y=10_____(1)

2 case: (x-5)= 7(y-5)

x-5=7y-35

x-7y=-35+5

x-7y=-30_____(2)

from equation (1)&(2)

x-3y=10______(1)

x-7y=-30______(2)

__________

0-10y=-20

10y=20

y=20/10

[y=2]

putting the value of y in equation (1)

x-3(2)=10

x-6=10

[x=16]

The present age of man=16

The present age of son=2