Directions: Information about three values have been given, you have to calculate the value of all three quantities and answer the question accordingly.

X: 60 Men could do a job in 40 days. Due to inclusion of some more Men, the work gets completed in 4/5 time. Fine the number of men added.

Y: A can finish the work in 5 days, while B takes 12 days to complete the same work. If A starts and they work on alternative days, Find the number of days taken to complete the work.

Z: A pipe can fill 40% of the tank in 6 hours. B can empty 30% of the same tank in 12 hours. If the tank is already half filled, find the time taken to fill the tank when both the pipes are opened together.