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Two classrooms are to be built in a school and planned that 8 masons and labours shall complete them is 20 days. If the number of workers is increased up to 10, how many days will be taken in the completion of work?
  1. 26 days
  2. 36 days
  3. 16 days
  4. 15 days
Explanation

8 men can do work = 20 days 

1 man can do this work = 8*20

10 men can do that work = [8*20]/10

                                              =16 days 


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