SOLUTION: A change purse contains 20 coins consisting of nickels and dimes and having a total value of $1.40. How many nickels are there?
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Question 335081: A change purse contains 20 coins consisting of nickels and dimes and having a total value of $1.40. How many nickels are there?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let N be the number of nickels, D the number of dimes.
1.
2.
From eq. 1,
Substitute into eq. 2,
.
.
.
There are 12 nickels in the purse.
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