the length and breadth are in the given ratio 5:2, if the cost of fencing the rectangle of Rs. 12.5 per meter is Rs. 25000. find the length and breadth
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let length = 5x and breadth = 2x
perimeter = 2(length + breadth)
= 2(5x + 2x)
= 14x
cost of fencing = Rs. 12.5/m
total cost = Rs. 25000
thus, perimeter = 25000/12.5 = 2000m
so, 14x = 2000m
x = 2000/14
length = 5x = 5(2000/14)
= 10000/14 = 714.285m
breadth = 2x = 2(2000/14)
= 4000/14 = 285.714m
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