Q. The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ 26.50 per metre is Rs. 5300, what is the length of the plot in metres?

A. 40
B. 50
C. 120
D. None of these

Dapzoi

Commented on 2022-01-15 11:19:40 (IST)

Answer: Option D

Explanation:

Let breadth = x metres.

Then, length = (x + 20) metres.

Perimeter = (5300/26.50) m = 200 m.

2[(x + 20) + x] = 200

2x + 20 = 100

2x = 80

x = 40.

Hence, length = x + 20 = 60 m.