Aptitude - Chain Rule - Discussion
Discussion Forum : Chain Rule - General Questions (Q.No. 9)
9.
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:
Answer: Option
Explanation:
Let the required number of revolutions made by larger wheel be x.
Then, More cogs, Less revolutions (Indirect Proportion)
14 : 6 :: 21 : x 
14 x x = 6 x 21
 x = |
6 x 21 |
| 14 |
x = 9.
Discussion:
13 comments Page 2 of 2.
Anonymous said:
9 years ago
@Rahul.
How is cogs inversely proportional to revolutions?
How is cogs inversely proportional to revolutions?
SOUNDARYA said:
9 years ago
@Anonymous.
Because the given cogs are 6 which is less than that of the revolutions 2, which is more.
Because the given cogs are 6 which is less than that of the revolutions 2, which is more.
Karthik said:
8 years ago
21 is of small cog then why is it compared with lager ration?
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