42.
A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the
smaller wheel has made 21 revolutions, then the number of revolutions mad by
the larger wheel is:
A. 4 B. 9
C. 12 D. 49
Answer: Option B
Explanation:
Let
the required number of revolutions made by larger wheel be x.
Then, More
cogs, Less revolutions (Indirect Proportion)
Title :
Chain Rule Q42
Description : 42. A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of ...
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