Arithmetic Aptitudes › Chain Rule › Question #5617
Single Choice Moderate

QA wheel that has 6 Cogs is measured with the larger wheel of 14 cogs when the smaller will has made 21 revolutions then the number of revolutions made by the larger wheel is

ID: #5617 Chain Rule 241 views
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#5617Q ID
ModerateDifficulty
Chain RuleTopic
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  • A 4 ✔ ✖
  • B 9 ✔ ✖
  • C 12 ✔ ✖
  • D 49 ✔ ✖
Correct Answer

Explanation

let the required number of revolution made by larger wheel be x.

Then,more cost,less revolutions. (Indirect proportion)

14:6::21:x

14x=6×21

x=6×21/14

x=9

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