Step One
Find the real price drop
3.80 - 3.30 = 0.50
Step Two
Find the % reduction.
Question Which numbers do you use? 3.30, 0.50, 3.80?
The reduction % = (0.50 / 3.80 )*100 = 13.158%
Answer: This gives you the % reduction. To the nearest 10th is is 13.2. (5 on Brainly always rounds up. It isn't true everywhere).