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Question 64
A landowner increased the length and breadth of a rectangular plot by 10% and 20% respectively.
The percentage change tn the cost of plot is :
Solution
Original area = lb
The length of the plot and the breadth are increased by 10% and 20%. So, the new area = 1.1 x 1.2 x l x b = 1.32lb
So, increase in the area = 32%
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