SOLUTION: Tiffany has 20 coins that are nickels and dimes. The total value of the coins is $1.75. How many nickels and dimes does she have?

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Question 435058: Tiffany has 20 coins that are nickels and dimes. The total value of the coins is $1.75. How many nickels and dimes does she have?
Answer by shree840(260) About Me  (Show Source):
You can put this solution on YOUR website!
let xbe nickels
20-x are dimes
x*.05+.10(20-x)=1.75
.05x+2-.1x=1.75
-.05x=-2+1.75=-.25
x=.25/.05=5
5 nickels and 15 dimes ANS