Question

the work of 27 men is same as that of 20 of the women how many men will work same work​

Answer 1

Answer:

27 men complete 1/6 of a job in 20 days, it takes 120 days for them to get it done. Now, by increasing the number of men that work together, the days required for the task to be done decreases in a proportion so that the product men * days is unchanged. This is called inverse variation.

So, considering that we need the project to be finished in 90 days, we can easily solve the equation 27 * 120 = x * 90, and get x = 36 (men), meaning that 9 more men are required.