A is firstly increased by 20 percent and then it is decreased by 30 percent. The final value of A is what percentage of the initial value of A?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 84%.
Let the initial value of A be 100
A is firstly increased by 20 percent
⇒ A = 100 + 20% of 100 = 100 + 20 = 120
A is decreased by 30 percent
⇒ A = 120 - 30% of 120 = 120 - 36 = 84
Thus, 84 is the final value of A
Now,
Required percentage = Final value/Initial value × 100
⇒ 84/100 × 100 = 84%
Thus, The final value of A is 84% of its initial value