Answer:
Explanation:
A class of students elected a class president.
Number of votes for candidate A = 12
Number of votes for candidate B = 18
Number of students who did not vote = 40 - (12+18)
= 40 - 30
= 10
The expression which gives the percent of voters who voted for candidate A would be :
Percentage of votes for candidate A =

=

= 30%
30% of the students who voted for candidate A.