Question 67607: Harvey has 12 coins in quarters and dimes, worth $1.80. How many dimes does he have?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Harvey has 12 coins in quarters and dimes, worth $1.80. How many dimes does he have?
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Let number of quarters be "x"; Value of these is 25x cents.
Number of dimes is 12-x; Value of these is 10(12-x)=120-10x cents
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EQUATION:
value + value = 180 cents
25x + 120-10x = 180
15x=60
x=4 (number of quarters)
12-x=8 (number of dimes)
Cheers,
Stan H>
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