GMAT Practice Question Set #42 (Question 124-126)

Problem Solving Question #125: Cleaning a Yacht  
Time 0 0 : 0 0 : 0 0

By himself, Jack can clean a yacht in 12 hours. On a particular day, he happens to finish
two-thirds of the work. The remaining portion of the work is done by Jill, whose rate of cleaning is just 10% of what Jack can do. How long does it take Jill to finish the remaining work?

(A)

4

(B)

8

(C)

22

(D)

40

(E)

65

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