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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 perimeters of the field is ?
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- 260 m
- 280 m
- 360 m
- none of these
Correct Option: C
Let length of rectangular field = 5y,
so width = 4y.
From question
5y - 4y = 20m
⇒ x = 20m
∴ Length = (5 x 20)m = 100 m
Breadth = (4 x 20) m = 80 m
∴ Perimeter = 2 (100 + 80 ) m = 360 m
