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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?

Option :

Answer:Option 1

Explanation:

Solution:
Let the required number of days bex.
Less persons, More days (Indirect Proportion)
More working hours per day, Less days (Indirect Proportion)
Persons 30:39Working hour/day 6:5}::12:x

30×6×x=39×5×12x=(39×5×12)(30×6)x=13



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