Time and Work Questions

9 women can complete a work in 50 days. If more 6 women were added to them, how many days before the work can be completed?

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?

A can complete a task alone in 8 days, while B takes 12 days to do it by herself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by herself?

Mahanath works 2 times as fast as Sahay. If Sahay can complete a job alone in 21 days, then in how many days can they together finish the job?

If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make

S and T can finish a work in 50 days. They worked together for 20 days and then left. How much of the work is left?

Mehdi can complete a work in 25 hours. If he is joined by Jahnavi who is 50% more efficient, in what time will they together finish the work?

If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in