The Length and breadth of a rectangular piece of land are in the ratio of 5:3.If the total amount of fencing it at the rate of $48 per metre is $192000, find its length and breadth.
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Answer:
length=l=1296,,, breadth=b=777.6
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let the length and breadth be 5x and 3x
then,
total amount =$192000
cost of fencing per metre =$48
total amount. = perimeter
cost of fencing per meter
$192000 = 4000m
$48
then,
perimeter of rectangle=2(L+B)
4000m=2(5x+3x)
4000m=2(8x)
4000=16x
x=4000
16
x= 250
L=5×250
1250
B=3×250
750
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