15 men can build a 16.25 -m- long wall up to a certainj height in one day. How many men should be employed to build a wall of the same height but of length 26 metres in one day?

22 men can dig a 27 m long trench in one day. How many men should be employed for digging 135 m long trench of the same type in one day ?

15 men can build a 16.5 m long wall in one day. How many men are required to build 66 m long wall in one day?

11 men can dig 6 3/4 metre long trench in one day. How many men should be employed for digging 27 metre long trench of the same type in one day?

11 men can dig 6 3/4 metre long trench in one day. How many men should be employed for digging 27 metre long trench of the same type in one day?

If 72 men can build a wall of 280 m length in 21 days, how many men could take 18 days to build a similar type of wall of length 100 m?

It is given that 16men working 18hr per day can build a wall 36m long, 4m broad and 24m high in 20 days . How many men will be required to build a wall 64 m long 6m broad and 18m high working 12hr per day in 16 days ?