Question

The list below shows the results of a survey of favorite ice-cream flavors among middle-school students.

18 students voted for chocolate.
12 students voted for strawberry.
20 students voted for vanilla.

What percentage of the students chose vanilla as their favorite ice-cream flavor?

A. 20%
B. 30%
C. 40%
D. 50%

Answer 1

C. 40%

Explanation:

First you add them together:

12+18+20 = 50

Then, you times both sides of the equation by 2

24+36+40 = 100

You can see that 20 changed to 40, and that's the answer!

Answer 2

C. 40%

Explanation:

There are 18 + 12 + 20 = 50 students in total.

20 students voted for vanilla.

So... 20 out of 50 students voted for vanilla.

20/50 = 2/5

2/5 = 40%