The total cost of painting the walls of a room is Rs 475 Find the cost of painting the walls of ano...........

Quantitative Aptitude ( CCS) Mensuration 3D

The total cost of painting the walls of a room is Rs 475. Find the cost of painting the walls of another room whose length, breadth and height each are double than the dimensions of the previous room ?

Rs 1780

Rs 1900

Rs 1846

Rs 1960

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Explanation:

Answer & Explanation
Rs 1900
Explanation:
Area of first room = 2(l+b)*h
After all dimensions doubled, new area = 2(2l+2b)*2h = 4[2(l+b)*h ] = 4 times previous area, so cost of painting = 4*475 = 1900