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There is a narrow rectangular plot. The length and breadth of the plot are in the ratio of 11:4. At the rate of Rs. 100 per meter it will cost the village panchayat Rs. 75000 to fence the plot. What are the dimensions of the plot?
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Answer:
Step-by-step explanation:
Given :
To find :
the dimensions of the plot
Solution :
Let the length of the plot be 11x and breadth be 4x.
Perimeter of the rectangle = 2(length + breadth)
⇒ P = 2(11x + 4x)
⇒ P = 2(15x)
⇒ P = 30x
It's also given that the cost of fencing is Rs 75000 at the rate of Rs. 100 per meter.
So,
Perimeter of the plot × 100 = 75000
(30x) (100) = 75000
3000x = 75000
x = 75000/3000
x = 75/3
x = 25
Therefore,
Solving in as short as possible:
Let length = 11x
breadth = 4x
Total cost of fencing the rectangular plot = rate of fencing × perimeter
=> 75000 = 100 × 2(l+b)
=> 100 × 2(11x + 4x) = 75000
=> 3000x = 75000
=> x = 75000/3000 = 25
Dimensions are:
Length = 11×25 = 275m
Breadth = 4×25 = 100m
Dimension of the plot = 275m × 100m