4 Draughtsman can complete a drawing in 10 days . After 6 days, 2 extra Draughtsman join the group. How many days are now saved?

45 men can complete a work in 16 days.Six days after they started working,30 more men joined them.How many days will they now take to complete the remaining work?

48 people could complete a task in 17 days .After 6 days , 4 of the workers left . How many days from then will it take to complete the task ?

12 men complete a work in 18 days. Six days after they had started working, 4 men joined them. How many days will all of them take to complete the remaining work ?