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A rectangle becomes a square when its...

A rectangle becomes a square when its length is reduced by 10 units and its breadth is increased by 5 units. But by this process the area of the rectangle is reduced by 210 sq. units. The area of the rectangle `2950 > A<2900` (b) `2900 > A > 2875` (c) `2925<>2875` (d) `2925 > A > 2900`

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