Five years ago A was thrice as old as B and ten years later, A shall be twice as old as B. What are the present ages of A and B?

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asked Jan 30, 2018 in Mathematics by sforrest072 (157,439 points) 61 410 940
edited Feb 1, 2018 by sforrest072

Five years ago A was thrice as old as B and ten years later, A shall be twice as old as B. What are the present ages of A  and B?

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answered Jan 30, 2018 by mdsamim (213,225 points) 5 10 15
selected Jan 30, 2018 by sforrest072
 
Best answer

Let the present ages of B and A be x years and y years respectively. Then

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