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Question
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Area of the walls of a room and the cost of white washing the walls.
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Solution
Area of the walls of a room and the cost of whitewashing the walls are directly proportional to each other.
E.g. Let Rs 1000 required for whitewashing a room with (12 × 8) m size.
Then, Rs 2000 is required to whitewashing a room with (12 × 16) m size.
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