Suman's mother is four times as old as suman . Twenty years later, she will be just twice as old as suman will be then . Find the present age of suman.
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let suman's age be x, then her mother's age= 4x
agter 20 years their age will be:suman's=x+20, mother's= 4x+20
after 20 years she will be twice suman's age. so:
4x+20=2(x+20)
=4x+20= 2x+40
=4x-2x=40-20
=2x=20
=x=10
therefore suman is 10 years old
agter 20 years their age will be:suman's=x+20, mother's= 4x+20
after 20 years she will be twice suman's age. so:
4x+20=2(x+20)
=4x+20= 2x+40
=4x-2x=40-20
=2x=20
=x=10
therefore suman is 10 years old
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Answer:
Susan's age will be 10 years old
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