SOLUTION: A coin collector has 29 dimes and nickels with a total face value of $2.40. (They are actually worth a lot more.) How many of each coin does she have
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Question 632991: A coin collector has 29 dimes and nickels with a total face value of $2.40. (They are actually worth a lot more.) How many of each coin does she have Answer by Maths68(1474) (Show Source):
You can put this solution on YOUR website! Nickels=x
Dimes=29-x
Total value of all coins= $2.40
(Nickels)(Value of a Nickel)+(Dimes)(Value of a Dime)=Total value of all coins
(x)(0.05)+(29-x)(0.1)=2.40
0.05x+2.9-0.1x=2.40
0.05x-0.1x=2.40-2.9
-0.05x=-0.5
-0.05x/-0.05=-0.5/-0.05
x=10
