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1. Find the common difference of the sequence: 31, 26, 21, 16, ...
2 answers:
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Answer:
Afternoon class has more students.
Step-by-step explanation:
Let m be the number of students in the morning class and n be the number of students in the afternoon class.
The average score for the students in the morning class was 80, then the sum of their scores is
The average score for the students in the afternoon class was 86, then the sum of their scores is
The sum of the scores of both classes is
and the average score is
The average (arithmetic mean) score for the two classes combined was 84, then
This means n is greater, so afternoon class has more students.