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?
Correct Answer: 360 m
Explanation:
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
