Two mechanics were working on your car. One can complete the given job in 4 hours, but the new guy takes eight hours. They worked together for the first two hours, but then the first guy left to help another mechanic on a different job. How long will it take the new guy to finish your car?
Options.
A) 2 B) 4/3 C) 15/4 D) 10/3 E) 17/5
Rate(1)=1/4   Rate(2)=1/8   Combined = 3/8   Work done in 2 days=3/4   Work left = 1/4   Rate * Time = Work left   1/8 * Time = 1/4   Time=2   2
<result>A</result>
Two mechanics were working on your car. One can complete the given job in 4 hours, but the new guy takes eight hours. They worked together for the first two hours, but then the first guy left to help another mechanic on a different job. How long will it take the new guy to finish your car?