A painter needed 3 days to paint a room. How long would it take him, working at the same rate, to paint a room twice as long and twice as wide?
Answer: 12 days because, the walls would be four times as big as the first room.
I think the information is not enough! because we don't have the height. In the big room we have twice the walls and 4 times the ceiling, therefor painting takes more than 6 days but we can't know how many ?!
One painter can paint a wall in 30 minutes, another painter needs 15 minutes for the same size wall. How long will they take to paint the wall working together?
It cost Rs. 1089 to paint all the surfaces of a cube at the rate of Rs. 1.5 per meter square. If the same cube is cut to form three cuboids of equal volumes, then what is the cost of painting all the surfaces of any two of the cuboids so formed at the 50% more rate?
If 2 workers can complete painting 2 walls in exactly 2 hours.
How many workers would be needed to paint 18 walls in 6 hours?
The cost of tiling a room 28 m long with a tile 35 cm wide at Rs. 4.50 per metre is Rs. 810. What is the breadth of the room
A, B and C together can complete a certain work in 24 days. A and C together work twice as much as B while A and B together works four times the as much as C, then A alone can do the same work in how many days?