A collection of 39 coins consist of dimes and nickels. The total value is $2.85. How many dimes and how many nickels are there ?

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asked Nov 7, 2019 39.2k views

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Jon Ericson · Answer 1 · 2019-11-14T08:57:16+0000

If all were dimes, the value would be 39*.10 = 3.90. It is 1.05 less than that. Each nickel that replaces a dime reduces the value by .05, so there must be
.. 1.05/.05 = 21 nickels
and 39-21 = 18 dimes

A collection of 39 coins consist of dimes and nickels. The total value is $2.85. How many dimes and how many nickels are there ?

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