When the price of a Bluetooth earphone is increased by 12%, its sale(number of Bluetooth earphones) is reduced by 20%. What is the net impact on its revenue?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 10.4% decrement.
The net revenue = x + y + xy/100
⇒ 12 - 20 - 240/100
⇒ -8 - 2.4 = - 10.4 [negative sign shows the decrement]