the lenght of a rectangular plot is 20 m more than its breadth. If the cost of fencing the plot @ 26.50 per m is Rs.5300,what is the lenght of the plot in metres ?
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Let b = x
l = 20+x
perimeter = 2*(20+x+x) = 2*(20+2x) = 40+4x
26.50(40+4x) = 5300
1060 + 106x = 5300
106x = 5300-1060
x = 4240/106
x = 45
l = 20+x
perimeter = 2*(20+x+x) = 2*(20+2x) = 40+4x
26.50(40+4x) = 5300
1060 + 106x = 5300
106x = 5300-1060
x = 4240/106
x = 45
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