Quantitative Question:
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Each side of a rectangle is increased by 100% .By what percentage does the areaincrease?

Answer:

300%.

100% of l=l
new length = l+l= 2l
new width = b+b= 2b
old area = l*b
new area = 2l * 2b
= 4lb
therfore increase in area= 400%

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