SOLUTION: Carlos has 4 times as many pennies as David. How many pennies must Carlos give David so that they each have 90 pennies?

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Question 1050417: Carlos has 4 times as many pennies as David. How many pennies must Carlos give David so that they each have 90 pennies?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Carlos has 4 times as many pennies as David. How many pennies must Carlos give David so that they each have 90 pennies?
C = 4D
C + D = 180 (They must have had 180 all together)
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4D + D = 180
5D = 180
D = 36
C = 144
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Equation:
C-x = 90
144 -x = 90
Ans:: x = 54 (# of pennies Carlos should give to David
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Cheers,
Stan H.
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