SOLUTION: how can i show the equations used for the solution.
Richard has 22 coins with a total value of $4. If the coins are
all quarters and dimes, how many of each type of coin does
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Richard has 22 coins with a total value of $4. If the coins are
all quarters and dimes, how many of each type of coin does
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Question 91967: how can i show the equations used for the solution.
Richard has 22 coins with a total value of $4. If the coins are
all quarters and dimes, how many of each type of coin does he have?
You can put this solution on YOUR website! Richard has 22 coins with a total value of $4. If the coins are
all quarters and dimes, how many of each type of coin does he have?
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Let number of quarters be "x" ; value of these is 25x cents
Number of dimes is "22-x" ; value of these is 10(22-x) = 220-10x cents
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EQUATION:
value + value = 400 cents
25x + 220 - 10x = 400
15x = 180
x = 12 (# of quarters)
22-x = 10 (# of dimes)
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Cheers,
Stan H.
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