Question 1149311: mandy has 15 coins in her pocket that are either dimes or quarters. the value of her coins is $2.85. how many dimes does she have? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! mandy has 15 coins in her pocket that are either dimes or quarters. the value of her coins is $2.85. how many dimes does she have?
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d + q = 15
10d + 25q = 285
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Or:
15 dimes ---> 150
Each dime replaced by a quarter add 15 cents.
285 - 150 = 135
135/15 = 9 quarters
