Question

30 men working 16 hours per day constuct a school in 20 days in how many days with 24 working 20hours per day​

Answer 1

Answer:

30 men take 160 hours , 1 man would take 160 X 30 = 4800 hours , 24 men , working 18 hours would take = 4800/(24 X 18) = 11.11 days or 12 days to complete the task.

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

I think this is very simple question. Each case should be multiplied each other, the unit would be man.hour.

To get man.hour = 30 man x 16 hours/day x 10 days = 4800 manhour.

Both of equation should gives the same number:

24 men x 18 man/hour x ? Day = 4800 man.hour

= 11.1 day