A is twice as old as B . Five years ago A was 3 times as old as B . Find their present ages.
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Let age of B is x
Then age of A is 2x
5 years ago A is 3 times as old as B.
5 years ago the age of A was (2x-5)
Similarly 5 years ago age of B was( x-5)
According to the question, 2x-5=3(x-5)
2x-5=3x-15
x=10 yrs
So, present age of B is x i. e 10 yrs and present age of A is 2x=2×10=20 yrs
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