Q: If the length and breadth of a square are increased by 40% and 30% respectively, how much does the area of the resulting rectangle exceed the area of the original square?
B
Answer:
B
Explanation:
We can define a variable "z" as the net percent change in area and
set up the following equation:
z = (x + y + xy/100)%
= (40 + 30 + (40 * 30)/100)%
= 82%
This equation shows that the net percent change in area is 82%.
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