The percentage that the west middle school should get is 22.5%. Option C
What is percentage?
A percentage is a division or portion of a whole given in terms of 100. It is commonly represented by the symbol "%". The word "percent" is derived from the Latin per centum, which implies "by the hundred." Percentages are used to describe relative values, ratios, and proportions. In mathematics, a percentage is calculated by dividing a fraction by the whole and then multiplying the result by 100.
We know that;
Total number of the students = 400 + 650 + 500 + 450
= 2000
Then;
450/2000 * 100/1
= 22.5%