A mat of length 180 m is made by 15 women in 12 days. How long will it take for 32 women to make a mat of length 512 m?

If 48 men working 7 hours a day can do a work in 24 days, then in how many days will 28 men working 8 hours a day can complete the same work?

If 15 men take 40 days to complete a work, how long will it take if 15 more men join them to complete the same work?

A and B together can do a piece of work in 16 days and A alone can do it in 48 days. How long will B done take to complete the work?

X, Y and Z can do a piece of job in 4, 6 and 10 days respectively. If X,Y, and Z work together to complete, then find their separate shares if they will be paid Rs 3100 for completing the job.