the perimeter of a rectangle is 240cm .if it's length is increased by 10℅ and it's breadth is decreased by 20℅ we get the same perimeter . find the length and breadth of the rectangle.
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length=80cm and breadth= 40 cm
if length is increased by 10%then it become 11x/10 and breadth decresed by 20%then it become 4y/5 , but there perimeter will be same . now we get two equation ,
2(x+y)=240 and 2(11x/10+4y/5)=240 then by solving we get answer
if length is increased by 10%then it become 11x/10 and breadth decresed by 20%then it become 4y/5 , but there perimeter will be same . now we get two equation ,
2(x+y)=240 and 2(11x/10+4y/5)=240 then by solving we get answer
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