Chain Rule Practice Test 2 with solutions

Question : 12 of 40

Marks: +1, -0

10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?

Solution:

Men	Days	Hours
10	18	6
15	12	x

⇒

x/6

{18]/{12}×{10}/{15}

∴ x =

3/2 × 2/3 × 6

= 6 days

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