A) 12% increase
B) 12% decrease
C) 30% increase
D) 40% decrease
Correct Answer: A
Solution :
Here, \[x=-20,\,\,\,y=40\] Net effect\[=\left[ x+y+\frac{xy}{100} \right]%\] Net effect\[=\left( -\,20+40-\frac{800}{100} \right)%=12%\] Positive sign shows increase.You need to login to perform this action.
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