2 painter takes 2 hours to Paint 2 rooms means,
1 painter takes 2 hours to paint 1 room.
So in 6 hours 1 painter can paint 3 rooms.
So to paint 18 rooms in 6 hours 6 painters are needed.
Answer is 6 Painters take 6 hours to paint 18 rooms
Pipe A can fill a cistern in 4 hours while pipe B can empty it in 6 hours. If both of them are opened together at the same time when the tank is empty, then how many hours would be taken by them to fill it?
A alone would take 4 hours more to complete a job than both A and B would together.
If B worked alone, he took 9 hours more to complete it than both A and B worked together.
What time would they take if both worked together?
If 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men?
If 17 men and 18 women can do a piece of work in 11 days and 14 men and 13 women can do it in 15 days.
How many days will 27 men and 18 women take to do it?