SOLUTION: A wallet contains $1, $5 and $20 bills. The number of $5 bills is equal to the sum of the other bills. If the wallet contains ten bills total, how many $5 bills does it contain?

Question 106273: A wallet contains $1, $5 and $20 bills. The number of $5 bills is equal to the sum of the other bills. If the wallet contains ten bills total, how many $5 bills does it contain?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
Let $1 bill be , $5 bill be and $20 bill be .
if the number of $5 bills is equal to the sum of the other bills, we can write:

If the waellt contains bills , we can write:

since we can substitute it

..........divide both sides by
.... if this is , => that
the waellt contain $5 bills.
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