A rectangular plot's length is 20 metres longer than its width. What is the length of the property in metres if the cost of fencing the plot is Rs. 5300 at a rate of Rs. 26.50 per metre?
A. 40
B. 50
C. 120
D. None of these
Answer:D
A rectangular plot's length is 20 metres longer than its width. What is the length of the property in metres if the cost of fencing the plot is Rs. 5300 at a rate of Rs. 26.50 per metre?
A. 40 B. 50 C. 120 D. None of these
Explanation: Let's say the width is x metres.The length is then equal to (x + 20) metres.5300 m / 26.50 m = 200 m Perimeter.200 = 2[(x + 20) + x].100 = 2x + 20 80 = 2x.x equals 40.As a result, length = x + 20 = 60 metres.