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Two cogged wheels of which one has 32 cogs and other 54 cogs, work into each other. If the latter turns 80 times in three quarters of a minute, how often does the other turn in 8 seconds? A) 48 B) 24 C) 38 D) 39 E) None of these
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Answer: B 

Number of turns required= 80 × 54/32 × 8/45 = 24

24 times
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