If four women takes two days to dig a hole, how long does it take two man to dig half of a hole?

Question

Three workmen set out to dig a hole.
On his own, Vikram can dig a hole in 18 minutes, Harish can dig a hole in 6 minutes and Mahesh can dig a hole in 5 minutes.
They started to dig this hole together.
Unfortunately, Mahesh had forgotten what he was supposed to be doing and was actually shovelling the dirt back into the hole at the same rate as he could have removed dirt.
Vikram and Harish never noticed this so how long did it take them to dig a hole?

Answer 1

Answer is: HOLE is Hole only it cant be diged half.

Answer 2

2 days

1 hole/4 women=1/4 hole per woman
1/4 hole per woman/2 days=1/8 hole per woman per day
1/2 hole/2 men=1/4 hole per man
1/4 hole per man/(1/8) hole per person per day=2 days
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