The cost of papering the four walls of a room at 75 paise per square m – InterviewSolution

InterviewSolution

1.	The cost of papering the four walls of a room at 75 paise per square metre is 240. The height ofthe room is 5 metres. Find the length and the breadth of the room if they are in the ratio 5:3
Answer» Length/Breadth=5/33L=5BL=5B/3Area of 4 walls=Curved surface of cuboid=2(L+B)HNow area=24000/75=320m^2320=2(L+B)H160=(5B/3+B)532=8B/396/8=BB=12mL=5(12)/3=20m

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