SOLUTION: Cleaning up around the kennel you picked up a total of 52 coins. Unfortunately, they were only pennies and nickels. The value of the coins was $1.20. How many pennies and how ma

Algebra ->  Expressions-with-variables -> SOLUTION: Cleaning up around the kennel you picked up a total of 52 coins. Unfortunately, they were only pennies and nickels. The value of the coins was $1.20. How many pennies and how ma      Log On


   

Question 307278: Cleaning up around the kennel you picked up a total of 52 coins. Unfortunately, they were only pennies and nickels. The value of the coins was $1.20. How many pennies and how many nickels did you pick up?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
P+N=52 OR P=52-N
.01P+.05N=1.20
.01(52-N)+.05N=1.20
.52-.01N+.05N=1.20
.04N=1.20-.52
.04N=.68
.04N=.68
N=.68/.04
N=17 NUMBER OF NICKELS.
P=52-17
P=35 NUMBER OF PENNIES.
PROOF;
.01*35+.05*17=1.20
.35+.85=1.20
1.20=1.20