SOLUTION: A box contains 30 coins, consisting of nickels and dimes, worth a total of $2.40. How many of each coin there in the box.

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Question 1096138: A box contains 30 coins, consisting of nickels and dimes, worth a total of $2.40. How many of each coin there in the box.
Answer by Alan3354(69443) About Me  (Show Source):
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A box contains 30 coins, consisting of nickels and dimes, worth a total of $2.40. How many of each coin there in the box.
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n + d = 30
5n + 10d = 240