The area of a rectangular field is 480 m2. If the length is 20% more than the breadth, then the length of the rectangular field is
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Correct answer: C
Explanation
The correct answer is option 3 i.e. 24 m.
Given that
The area of a rectangular field = 480 m2
If the length is 20% more than the breadth
Let the breadth of the rectangle be b
Length = 1.2 b
Area of a rectangle = length × breadth
length × breadth = 480
⇒ 1.2 b × b = 480
⇒ b2 = 480/1.2 = 400
⇒ b = 20 m
length = 1.2 × 20 = 24 m