Time and Work Questions

A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in

12 men complete a work in 9 days. After they have worked for 6 days, 6 more men join them. How many days will they take to complete the remaining work?

A,B and C contract a work for Rs. 440. Together A and B are to do 9/11 of the work. The share of C should be:

If 7 spiders make 7 webs in 7 days , then 1 spider will make 1 web in how many days ?

A can do a piece of work in 9 days while B can do it in 12 days. A and B together can do the work in

A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

A can do 1/3rd of a work in 5 days and B can do 2/5th of this work in 10 days. Both A and B, together can do the work in

X, Y and Z can do a piece of work in 30, 40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed?