SOLUTION: I have 93 cents and 8 coins. I have the same number of quarters as pennies. Each type of coin is used. What are the coins?

Question 1107964: I have 93 cents and 8 coins. I have the same number of quarters as pennies. Each type of coin is used. What are the coins?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
pennies, nickels, dimes, and quarters
maximum pennies=3=quarters
That is 78 cents
that leaves 1 dime and 1 nickel for 93 cents.
also can do pennies=x=quarters
(8-2x)/2= dimes and nickels
.01x+.25x+.10(8-2x)/2+.05 (8-x)/2=0.93
the last two terms are .15(8-2x)/2
multiply everything by 2 to clear fractions
.02x+.50x+.15(8-2x)=1.86
.22x+1.20=1.86
.22x=0.66
x=3

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