Question

The length and breadth of a rectangular piece of land are in the ratio 5:2. If the total cost of
fencing it at Rs. 12 per meter is Rs. 25000, find its length and breadth

Answer 1

ratio of length and breadth of the rectangular piece equals to 5 ratio 2
the total cost of fencing is rupees per metre equals to 12
the cost of fencing rupees 12 per metre is rupees 25000
the length and breadth equals to 25000 into 12 bye 5 ratio 2
then 25000 by

Answer 2

Length : breadth = 5:2
Therefore, L=5k and B=2k
Rs. 12= for fencing 1 m
Rs. 25000 = 25000/12= for fencing 2083.4 m
Therefore, Perimeter =2083.4m
2(l+b)=2083.4
2(5k+2k)=2083.4
2(7k)=2084.3
7k=2083.4/2
K=1041.7/7
K=148.8

L=5(148.8)=744m (approx.)
B=2(148.8)=297.6m (approx.)

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