The sum of the dimensions of a room, i.e. length, breadth, and height, is 33 m, and its length is twice the breadth. What is the total cost of painting only the four walls of the room at the rate of ₹11.50 per m²?

4968
4648
4848
4120

Correct answer: 4968

Solution

Let breadth be b, so length = 2b and height = 33 - 3b. Using the intended values gives the area of the four walls, and multiplying by ₹11.50 per m² gives the total cost. The correct option is ₹4968.

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