A solid piece of metal, cuboidal in shape, with dimensions 12 cm, 9 cm and 2 cm is recast into a cube. What is the lateral surface area (in cm²) of the cube?
A person buys a table fan for ₹2,800 and sells it at a loss of 12%. What is the selling price of the table fan?
A, B and C can complete a work in 10, 15 and 20 days, respectively. They work on alternate days such that 1st day A, 2nd day B and 3rd day C, again 4th day A, 5th day B and so on. If they work in the same way, in how many days will the work be completed?
A grocer purchased 50 kg of sugar at ₹40 per kg and mixed with 70 kg of sugar at ₹30 per kg. At what rate should he sell the mixture (per kg) to gain 20%?