39 persons can repair a road in a 12 days working 5 hours per day in how many days will 30 person working 6 hours per day complete the work
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Answer:
et the required number of days be x.
Less persons, More days (Indirect Proportion)
More working hours per day, Less days (Indirect Proportion)
Persons30:39Working hours/day6:5}⋮⋮ 12:x
=> 30 * 6 * x = 39 * 5 * 12
=> x= 13
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