Question

Q.5
A person digs a tunnel of 5km in 20 days, In how many days will he dig the
tunnel of 15 km length.​

Answer 1

Answer:

If he has to start from starting to dig a tunnel of 15 km then it will just be thrice of the time,i.e. 60 day.

But if its a trick question and he is continuing the same tunnel then he has already dig 5 kms.So he just have to dig 10 more km which would require 40 days.

Answer 2

Answer:

60 days Is the answer for the question