Question

five years hence, the age of Jacob will be three times that of his son age. Five years ago, Jacob age was seven times that of his son. What are their present ages?
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Answer 1

let jacob=x,son=y

aft 5 yrs

x+5=3(y+5)

x+5=3y+15

x-3y=10....1

x-5=7(y-5)

x-5=7y-35

7y-x=-30....2

from 1

x=10+3y

put value of x in 2

7y-(10+3y)=-30

7y-10-3y=-30

4y=20

y=5

put value in 1

x-15=10

x=25

Answer 2

Answer:

Please refer the attachment dear