Question

If 3 men are required to complete the work in 5 days. How many men are required to complete the same work in 3 days?​

Answer 1

Step-by-step explanation:

If 3 men do the work in 5 days, the work requires 15 man-days.

So 1 man should be able to day the same work in 15 days, mathematically speaking.

But in practical terms it is not possible for 1 man to do the work, always.

Answer 2

Answer:

42

Less number of days then more number of people.

People and days are in inverse proportion.

Let x men are required to complete the job in 40 days.

as this is inverse proportion.

x:60::28:40

⟹40x=60×28

⟹x=

40

60×28

⟹x=42

Hence, 42 men are required to complete the job in 40 days.