If a company pays Rs. 6 lakh for 15 workers for 20 days, what would it pay for 5 workers for 12 days?

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?

A works 3 times as fast as B and is able to complete a task in 24 days less than the days taken by B. Find the time in which they can complete the work together.

A and B can do a piece of work in 12 days and 9 days respectively. They work on alternate days starting with A on the first day. In how many days will the work be completed?

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.