#### Answer

313 cars

#### Work Step by Step

They should try to wash 313 cars because you cannot wash a fraction of a car to get exactly 400 dollars. So you round to the next whole number to get slightly more than 400 dollars.

Published by
Brooks Cole

ISBN 10:
0-53449-636-9

ISBN 13:
978-0-53449-636-4

313 cars

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