Solve the problem. Then identify the piece of information that is unnecessary to solve the problem.A rental car company that rents cars for local-only use charges $50 plus $0.20 for each mile the rental car is driven. If a customer gives the rental attendant $100 for a charge of $60, how many miles did the customer drive?
A. 300 miles
unnecessary information: the $50 flat charge
B. 49 miles
unnecessary information: the $0.20 per-mile charge
C. 50 miles
unnecessary information: giving $100 to attendant
D. 25 miles
unnecessary information: the $60 charge
Answer: C
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