Chain Rule Practice Test 2 with solutions

Question : 19 of 40

Marks: +1, -0

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?

Solution:

Persons	Hours	Days
39	5	12
30	6	x

⇒

x/{12}

5/6 × {39}/{30}

∴ x =

5/6 × {39}/{30} × 12

= 13 days

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