Question

If 5 men take around 3 hours to dig 3 holes, how long will it take for 2 men to dig half a hole?

Answer 1

Answer:

1.25 hours

Step-by-step explanation:

5 men take 3 hours to dig 3 hole, then

1 man will take 3 hours to dig 3/5 hole

1 man will take 1 hour to dig 1/5 hole.

Now we have 2 men and 1/2 hole to dig

we know 1 man in 1 hour will dig 1/5 hole

2 men in 1 hour will dig 2/5 hole

now for 2/5 hole , 2 men take 1 hour

for 1/2 hole, 2 men will take { 1÷(2/5) }*1/2

i.e. 5/2*1/2 = 5/4 hours = 1.25 hours