SOLUTION: f you have to pay $75.00 and have 27 bills of $1.00 and $5.00, how many bills do you need of $1.00 and $5.00 to pay.
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Question 965882: f you have to pay $75.00 and have 27 bills of $1.00 and $5.00, how many bills do you need of $1.00 and $5.00 to pay.
Answer by ikleyn(52817) (Show Source): You can put this solution on YOUR website!
Let x be the number of bills of $1.
Then the number of bills of $5 is 27-x, in accordance with the condition.
It gives an equation
x + 5*(27-x) = 75.
To solve it, open parentheses and reduce the like terms:
x + 5*27 - 5x = 75,
-4x = 75 - 5*27,
-4x = 75 - 135,
-4x = -60,
4x = 60,
x = 15.
Answer. You need 15 bills of $1 and 27-15 = 12 bills of $5.
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