Question 129652
Juan goes to a bank and gets change for a $50 bill consisting of $5 bills and $1 bills. There are 22 bills in all. How many of each kind are there?
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Let the number of $1 bills be "x" ; value is x dollars
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# of $5 bills is "22-x" ; value is 5*(22-x)= 110-5x  dollars
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EQUATION:
value + value = 50 dollars
x + 110-5x = 50
-4x = -60
x = 15 (# of $1 bills)
22-x = 7 (# of $5 bills)
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Cheers
Stan H.