Rohan can paint `1/3` of a painting in 6 days. How many days will he take to complete the painting?

Karim can do (1)/(4) of a work in 5 days.How many days will he take to complete the work?

A can complete a work in 'm' days and B can complete it in 'n' days. How many days will it take to complete the work if both A and B work together?

If m persons can paint a house in d days, how many days will it take for (m + 2) persons to paint the same house?

15 persons working 8 hours a day can complete a work in 21 days.How many days will 14 persons take to complete a work 1(1)/(2) xx as great,if they work 6 hours a day?

10 men can finish painting a wall in 8 days. How many more men will be needed if the painting work is to be finished in 4 days?

Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth and height of 15m, 10m and 7m respectively. From each can of the paint 100m^2 of area is painted. How many cans of paint will she need to paint the room?