SOLUTION: Ten years ago, Bob was three times as old as Anna. Today, he is twice as old as Anna. How old is Bob today?

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Question 857697: Ten years ago, Bob was three times as old as Anna. Today, he is twice as old as Anna. How old is Bob today?
Answer by Seutip(231) About Me  (Show Source):
You can put this solution on YOUR website!
Ten years ago:
x - Anna's age
3x - Bob's age
Present:
x+10 - Anna's age
3x+10 - Bob's age
Therefore:
3x%2B10+=+2%28x%2B10%29
3x%2B10+=+2x%2B20%29
x+=+10%29
Therefore their ages now are:
Bob = 3x+10 = 40 y.o.
Anna = x+10 = 20 y.o.
HOPE THAT HELPS!
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