Chain Rule: Solved 10 Chain Rule Questions and answers section with explanation for various online exam preparation, various interviews, Logical Reasoning Category online test. Category Questions section with detailed description, explanation will help you to master the topic.
Chain Rule Questions
1. Some persons can do piece of work in 12 days. Twice the number of such persons will do half of that work in, how many days.
We will use our logic.
Some number of people complete the work in 12 days.
Number of people and time taken to complete the work is inversely proportional
Twice the people, will reduce the time by half.
Twice the number of people will complete the work in 6 days.
But now, only half of the work have to completed, which will take only 3 days.
4. 39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?
Let the required number of days by x
Less person, more time (Inverse proportion)
Persons => 30 : 39 :: 12 : x
Time => 6 : 5 :: 12 : x
Therefore 30 x 6 x (x) = 39 x 5 x 12 => x = (39 x 5 x 12) / ( 30 x 6)
x = 13
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