Question

2. A certain work can be done h a certain time by
36 men; but had their 9 men more, it could have
been done in 5 days less. In how many days can
20 men do it? ​

Answer 1

Answer:

suppose total number of men = x  

x men can work a job in 60 days  

x men can work 1/60 job in 1 day  

1 man can work 1/60x in 1 day..........................1  

x+8 can do the same job in 50 days  

similarly,  

1 man can do 1/50(x+8) job in 1 day ..............2  

from 1 and 2, 1/60x = 1/50(x+8)  

solving the equation, x = 40 men.

Answer 2

Step-by-step explanation:

above one is correct answer