Question

7.A father is 30 years older than his son. In 12 years, the man will be three times as old as his son. Find their
present ages.
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Answer 1

Step-by-step explanation:

Let present age of father=x years

and present age of son=y years

According to 1st condition:

x=30+y

Acc. to 2nd condition:

(x+12)=(y+12)3

x+12=3y+36

x-3y=24

x=24+3y

Substitute the equation in 1st condition,

24+3y=30+y

3y-y=30-24

2y=6

y=3

x=24+3y

x=24+3 (3)

x=24+9

x=33

Present age of father=x=33 years

And present age of son=y=3 years

Answer 2

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