Question

if 4 man can do a piece of work in 10 days, how long will it take for 5 men to do the same work?​

Answer 1

Answer:

8 days

Step-by-step explanation:

4 men take 10 days to do 1 job. Using the law of indices (I am pretty sure that is what it is called), 1 man takes 40 days to do that same job (10 x 4 = 40)

Before I continue, the main principle of that law can be summed up in, do less to get more (ie the opposite). Normally, one would divide the days by 5 and get two, but with this particular law, we have to find out how much days 1 man takes and divide it by 5 (1 is 5x less that 5).

40/5 = 8.

Therefore the answer is 8 days.

Another way to do it is…

5/4 = 1.25. 10/1.25 = 8