Aptitude - Area - Discussion

Discussion Forum : Area - General Questions (Q.No. 13)
13.
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?
40
50
120
Data inadequate
None of these
Answer: Option
Explanation:

Let breadth = x metres.

Then, length = (x + 20) metres.

Perimeter = 5300 m = 200 m.
26.50

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

2x + 20 = 100

2x = 80

x = 40.

Hence, length = x + 20 = 60 m.

Discussion:
14 comments Page 2 of 2.

Muthu said:   1 decade ago
Its not area they mentioned as fencing so outer compound wall.

Anjali said:   1 decade ago
I hope.

Area=total cost/rate not the perimeter.

Avinash Sheshadri said:   1 decade ago
For 1m it costs rs.26.50 as given in the quest but fencin the whole plot it required Rs.5300.

26.50 - 1
5300 - ?

So perimeter is 200m n later normal method...hope u got it...

Nayaki said:   1 decade ago
Please explain me in detail.


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