Answer:
The ratio of the incumbent”s votes in the total number of votes = 7:8
Explanation:
Given:
Number of students who cast vote for the incumbent = 7,000
Number of students who cast vote for the opponent = 900
Number of protest votes = 100
To find ratio of the incumbent”s votes in the total number of votes.
Solution:
Total number of votes cast =

Number of votes for incumbent =

Ratio of incumbent”s votes in the total number of votes can be calculated as:
⇒

⇒

Simplifying to simplest fraction by dividing numerator and denominator by 1000.
⇒

⇒

Thus, ratio of the incumbent”s votes in the total number of votes = 7:8