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 rectangular tank is 20 m long and 21 m deep. If 10000 liters of water is drawn off the tank, the level of the water in the tank goes down by 1.5 m. How many liters of water can a tank hold?
How many kg of salt at 25 paise per kg must be mixed with 50 kg of salt costing 42 paise per kg so that a merchant will get a profit of 30% by selling the mixture at 39 paise per kg?
