SOLUTION: a jar is filled with 100 coins all of which are nickels and dimes the change in the jar is worth $6.75 how many coins are nickels and how many are dimes?

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Question 956446: a jar is filled with 100 coins all of which are nickels and dimes the change in the jar is worth $6.75 how many coins are nickels and how many are dimes?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
n = number of nickels
d = number of dimes

n + d = 100
5n + 10d = 675

10n + 10d = 1000
-5n - 10d = -675
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5n = 325
n = 65

There are 65 nickels and 35 dimes.