SOLUTION: A stack of pennies and dimes has a total value of $2.31. How many dimes are in the stack if there are twice as many dimes as pennies?
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Question 342344: A stack of pennies and dimes has a total value of $2.31. How many dimes are in the stack if there are twice as many dimes as pennies?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let D be the number of dimes, P the number of pennies.
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.
.
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Then from the first equation,
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