Question 354096: To changr P500, Mark received 4 more P20 bills than P50 bills. How many P20 and P50 bills did he receive? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! To change P500, Mark received 4 more P20 bills than P50 bills. How many P20 and P50 bills did he receive?
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Equations:
Let t be number of P20 bills.
Let f be number of P50 bills.
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t = f+4
20t+50f = 500
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Substitute for "t" and solve for "f":
20(f+4) + 50f = 500
20f + 80 + 50f = 500
70f = 420
f = 6 (# of P50 bills)
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Since t = f+4, t = 10 (# of P20 bills)
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Cheers,
Stan H.
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