Justin runs a car rental business where he rents out cars on a fixed hourly rate. One day Vicky rented a car from Justin

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Justin runs a car rental business where he rents out cars on a fixed hourly rate. One day Vicky rented a car from Justin for some hours and paid Justin the rent amount of \(\$ 396,\) which is non-refundable. However, due to some emergency call, Vicky had to pre-empt his job and returned the car \(6\) hours early - which resulted in an effective extra income of \(\$11\) per hour for Justin. For how many hours Vicky originally hired the car?

A. 11 hours
B. 12 hours
C. 15 hours
D. 18 hours
E. 24 hours

Answer: D

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