Question

A survey determined that 7/18 of the seventh grade students at Mills Middle School preferred round chocolate candies to hard candy. When Jennifer duplicated the survey, 1/9 of the students changed their preference from chocolate candy to hard candy.

What fraction of the students in the second survey preferred round chocolate candy?

A. 8/27
B. 7/162
C. 5/ 18
D. 1/2

Answer 1

The correct answer is C) 5/18

Explanation:

In order to find this answer, you need to take the fraction that answered it on the first try and subtract the number that changed their mind.

7/18 - 1/9

In order to complete this operation, you need to give them common denominators.

7/18 - 2/18 = 5/18