the ratio between the length and breadth of a rectangular field is 5:4. if the breadth is 20 meters less than the length. the perimeter of the field is---------?

none of these

260m

360m

280m

the ratio between the length and breadth of a rectangular field is 5:4. if the breadth is 20 meters less than the length. the perimeter of the field is---------?

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