SOLUTION: Robert is now 78 years old and his friend Charlie is 70. How many years ago was Charlie only 3/4 as old as Robert.

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Question 1034514: Robert is now 78 years old and his friend Charlie is 70. How many years ago was Charlie only 3/4 as old as Robert.
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Robert is now 78 years old and his friend Charlie is 70. How many years ago was Charlie only 3/4 as old as Robert.
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70+x = (3/4)(78+x)
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280 + 4x = 234 + 3x
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x = -54 yrs
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Robert was then 24 yrs old
Charlie was then 16 yrs old
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Cheers,
Stan H.
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Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Robert is now 78 years old and his friend Charlie is 70. How many years ago was Charlie only 3/4 as old as Robert.
highlight_green%28matrix%281%2C3%2C+46%2C+years%2C+ago%29%29 when Robert was 32, and Charlie was 24