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we know gear P in one sec completes 1/6 rev and gear Q 2/3 rev.
starting from choice D which is multiple of factors in both fractions, P would have completed 2 revs and Q 8 revs. The difference is Q-P =6.
- by Gmatdecoder
Sun Dec 14, 2014 1:51 am- Forum: Problem Solving
- Topic: Work Problem
- Replies: 9
- Views: 2403