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36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work ?

Correct Answer: 24 days

Explanation:

Less Men, means more Days {Indirect Proportion}
Let the number of days be x then,
27 : 36 :: 18 : x



[Please pay attention, we have written 27 : 36 rather than 36 : 27, in indirect proportion, if you get it then chain rule is clear to you :)]                                


=>27x = 36 * 18


=> x = 24


 So 24 days will be required to get work done by 27 men.


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