Question

If 30 men do 1 by 7 part of a job in 2 days , hiw many days will 21 men take to do the job

Answer 1

Step-by-step explanation:

30 men can do 1/7 th of a job in 2 days.

Hence the quantum of work done by them to complete total job = 30 * 2/(1/7) * 1 = 420 units.

So for 21 men, no.of days needed to do the same job = 420/21 = 20