The perimeter of a rectangle is 240cm. If its length is decreased by 10% and breath is increased by 20% we get the same perimeter. Find the original length and breath of the rectangle.
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Answer:
Step-by-step explanation:
Let l=x-10%
B=x+20%
P=240cm
Now
P= 2(l+b)
240=2(x-10%+x+20%)
120= 2x+10%
120-10%=2x
120-10/100=2x
12000-10/100=2x
devashish61:
nahi
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