You have a piggy bank containing a total of 107 coins in dimes and quarters. If the piggy bank contains $17.90, how many dimes are there in the piggy bank? There are ? dimes in the piggy bank.

Marcelo Mullins 2022-07-26 Answered
You have a piggy bank containing a total of 107 coins in dimes and quarters. If the piggy bank contains $17.90, how many dimes are there in the piggy bank?
There are ? dimes in the piggy bank.
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Answers (1)

Sandra Randall
Answered 2022-07-27 Author has 17 answers
Step 1
Let's say dimes = x
quartery = y
then, x + y = 107.
0.10 x + 0.25 y = 17.90
Step 2
10 x + 25 y = 1790
10 x + 25 ( 107 x ) = 1790
x = 59 , y = 48
There are 59 dimes.
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