Question

After twelve years I shall be three times as old four years ago. find my present age ?
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Answer 1

let present age be x
after 12 yrs it will be 12+x
given 12+x= 3(x-4)
12+x=3x-12
-3x+x= -12-12
=> -2x= -24
since both sides are negative we can write
2x=24
so x =24/2
x = 12
12 is the present age.
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Answer 2

let present age=x

a\q

x+12=3(x-4)


x+12=3x-12

24=2x

x12