Answer:
D
Explanation:
to find the percent discount we should do the follow things:
1) (40-32)/40=0.2=20%
2) (30-24)/30=0.2=20%
3) (50-40)/50=0.2=20%
4) (45-35)/45=0.2222
So the correct answer is D.
Elias calculated the discount in dollars, not in %. 3) 50$-40$=10$, 45$-35$=10$. But he made a mistake