SOLUTION: A jar contains 70 coins, all of which are nickels and
dimes. The total value of the coins in the jar is $5.70.
How many nickels / dimes are in the jar?
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-> SOLUTION: A jar contains 70 coins, all of which are nickels and
dimes. The total value of the coins in the jar is $5.70.
How many nickels / dimes are in the jar?
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Question 1016669: A jar contains 70 coins, all of which are nickels and
dimes. The total value of the coins in the jar is $5.70.
How many nickels / dimes are in the jar? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! nickels=x
dimes=y
x+y=70
.05x+.10y=5.70
5x+10y=570, multiplying by 100.
-5x-5y=-350, multiplying the first by -5
5y=220
y=44 dimes, $4.40
x=26 nickels, $1.30
