SOLUTION: Bob has 31 coins totalling $2.50. If he has only nickels and dimes, how many of each coin does he have?

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Question 959248: Bob has 31 coins totalling $2.50. If he has only nickels and dimes, how many of each coin does he have?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Bob has 31 coins totalling $2.50. If he has only nickels and dimes, how many of each coin does he have?
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n + d = 31
5n + 10d = 250