SOLUTION: It will cost $65.70 to send each student in the science club at Clinton Middle School on a field trip. To help pay for the field trip, the science club will hold a carwash that wil

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Question 1089598: It will cost $65.70 to send each student in the science club at Clinton Middle School on a field trip. To help pay for the field trip, the science club will hold a carwash that will charge customers $8 per car. Supplies for the carwash cost $120. There are 30 students in the science club. How many cars need to be washed to pay for the entire field trip?
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
65.70 * 30 + 120 = 8*n,

where n is an unknown number of cars to be washed.

Solve for n to get n = 261.375 and then take n = 262 as your answer.