SOLUTION: A piggy bank contains exactly 100 coins that total $5.00. The coins consist of pennies, dimes, and half dollars. How many of the coins are pennies?
I have tried just by guessing
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Question 358888: A piggy bank contains exactly 100 coins that total $5.00. The coins consist of pennies, dimes, and half dollars. How many of the coins are pennies?
I have tried just by guessing and checking for a while now but still haven't gotten anything. If you could help me that would be awesome.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
Subtract eq. 1 from eq. 2,
3.
Equation 3 has only 1 integer solution.
Then from eq. 1,
60 pennies, 39 dimes, and 1 half dollar.
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