SOLUTION: A jar holding 36 coins, only nickels and quarters, is worth $6.20. There are eight more quarters than there are nickels. How many nickels are in the jar

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Question 1072511: A jar holding 36 coins, only nickels and quarters, is worth $6.20. There are eight more quarters than there are nickels. How many nickels are in the jar
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
n = number of nickels
q = number of quarters

n + q = 36
5n + 25q = 620

Multiply the first equation by 25. We are going to eliminate the variable q.

25n + 25q = 900
5n + 25q = 620

Subtract: 20n = 280, so n = 14.

There are 14 nickels in the jar.