SOLUTION: a coin bank contains only nickels and dimes. The total value of the coins in the bank is $2.50. If the nickels were dimes and the dimes were nickels the total value of the coins wo

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Question 630531: a coin bank contains only nickels and dimes. The total value of the coins in the bank is $2.50. If the nickels were dimes and the dimes were nickels the total value of the coins would be $3.50. Find the number of nickels in the bank
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
5n+10d=250;
5d+10n=350
d=10 n=30
check
150+100=250
ok
50+300=350
ok