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Q.
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.
36
View Answer
Correct choice: B
Explanation:
Less Cogs more turns and less time less turns Cogs Time Turns A 54 45 80 B 32 8 ? Number of turns required=80 × 54/32 × 8/45 = 24 times
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