Question 570074: A jar of coins has quarters, nickels, and dimes. The total number of coins is 100. The total value of coins is $10.50. How many coins of each are in the jar?
This is what I have so far:
q + n + d = 100
.25q + .05n + .1d = 10.50
n = 100 - q - d
.25q + .05(100-q-d) + .1d = 10.50
.30q - .05d = 5.50
This is where I am stuck, Help! Thank you.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A jar of coins has quarters, nickels, and dimes. The total number of coins is 100. The total value of coins is $10.50. How many coins of each are in the jar?
This is what I have so far:
q + n + d = 100
.25q + .05n + .1d = 10.50
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You need a 3rd equation statement to solve for the variables.
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