A) 44% increase
B) 44% decrease
C) 66% increase
D) 75% increase
Correct Answer: A
Solution :
Let the original price be x and sale be of y units. Then, the revenue collected initially \[=x\times y\] Now, new price \[=0.8x,\]new sale \[=1.8\text{ }y\] Then, new revenue collected \[=1.44xy\] % increase in revenue \[=\frac{0.44\,xy}{xy}\times 100=44%\] Shortcut Method Net effect \[=-20+80+\frac{\left( -20\times 80 \right)}{100}\] \[=60-16=44%\]You need to login to perform this action.
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