SOLUTION: the school car wash charged $5 for a car and $6 for a van a total of 86 cars and vans were washed they earned $475 by solving a linear system how much of each were washed?
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Question 85301: the school car wash charged $5 for a car and $6 for a van a total of 86 cars and vans were washed they earned $475 by solving a linear system how much of each were washed?
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
C+V=86 C=86-V
5C+6V=475 NOW SUBSTITUTE (86-V) FOR C AND SOLVE FOR V.
5(86-V)+6V=475
430-5V+6V=475
V=475-430
V=45 VANS WASHED.
C+45=86
C=86-45
C=41 CARS WASHED.
PROOF
5*41+6*45=475
205+270=475
475=475
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