10 years age the age of father was 4.
time then age of his son 10 years hence the father is twice on the present
age to son
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45 year jdhdudur7r77e7r7e7e7r7r
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Let the present age of father be x
and the present age of son be y
According to the question
x-10=4(y-10) (equation 1)
x+10=2(y+10) (equation 2)
Solve the first equation:-
x-10=4(y-10)
x-10=4y-40
x-4y=-40+10
x-4y=-30
x=-30+4y (equation 3)
Solve the second equation:-
x+10=2(y+10)
x+10=2y+20
x-2y=20-10
x-2y=10 (equation 4)
Putting the equation 3 into equation 4
(-30+4y)-2y=10
-30+4y-2y=10
2y=10+30
2y=40
y=40/2 =20
x=-30+4y
x=-30+4×20
×=-30+80
×=50
So,
The present age of father be 50 years
and the present age of son be 20 years.
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