Chain Rule Practice Test 2 with solutions

Question : 34 of 40

Marks: +1, -0

If 12 men working 8 hours a day can do a work in 60 days, then how long will 9 men working 10 hours a day take in order to complete the same work?

68 days
56 days
54 days
64 days
None of these

Validate

Solution:

Time taken by 12 men working 8 hours a day = 60 days
Time taken by 1 man working 1 hour a day = 60 × 12 × 8
Time taken by 9 men working 10 hours a day
=

{60×12×8}/{9×10}

= 64 days

Go to Question:

Prev Question

Next Question