SOLUTION: (c) A is eleven times as old as B. In a certain number of years A will be five times as old as B, and five year after that A will be three times as old as B. How old are they now?

Question 679031: (c) A is eleven times as old as B. In a certain number of years A will be five times as old as B, and five year after that A will be three times as old as B. How old are they now?
Answer by pmatei(79) (Show Source): You can put this solution on YOUR website!

In the last 2 equations replace A with 11B (first equation) and distribute on the right side of the equations:

Bring the right side B-terms in the left side and the n's and 5 from the left side to the right side:

Divide by 2 the first equation:

Subtract first equation from the second one:

In years and (A five times older than B), and five years after that and (A three times older than B).

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