Question 550052


If Length of a rectangle is increased by 20% and width is decreased by 20% , then area will be ?


Let length = L, and width = W
Then, original area = LW


Increasing length by 20% makes the new length 1.2L
Decreasing width by 20% makes the new width .8W
New area = 1.2L(.8W), or .96LW


This means that the area would DECREASE by 4% (LW - .96LW) 


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