Question

5 years ago a man was 7 time as old as his son after 5 years the father will be 3 times old as his son find their presemt ages
plzzz ans clearly​

Answer 1

Answer:

let the present age of man=xyears

,,,,,,,,,,,. son=y years

a. to q.

x-5=7(y-5)

x-5=7y-35

x-7y=-35-5

x-7y=-40 eq.1

after 5 year

X+5=3(y+7)

X+5=3y+21

x-3y=21-5

x-3y=20 eq. 2yy

from eq.i and ii

x-7y=-40

x-3y=20

by substracting

-4y=-60

-- cancel

4y=60

y=60/4