GMAT Problem Solving
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Source: OG13th
Level: 5
At his regular hourly rate, Don had estimated the labor cost of a repair job as $336 and he was paid that amount. However, the job took 4 hours longer than he had estimated and, consequently, he earned $2 per hour less than his regular hourly rate. What was the time Don had estimated for the job, in hours?
- A 28
- B 24
- C 16
- D 14
- E 12