Question

There are 10 students in Ms. Cantrell's algebra class. On the first test, six students scored 80%, while the other four students scored 90%. What was the overall average on the test?

Answer 1

The overall average on the test is 82.8%.

Step-by-step explanation:

To find the overall average on the test, we need to calculate the weighted average. Since six students scored 80% and four students scored 90%, we can calculate the weighted average as follows:

Weighted Average = (Number of students scoring 80% * Score of 80% + Number of students scoring 90% * Score of 90%) / Total number of students

Weighted Average = (6 * 80 + 4 * 90) / 10 = 82800 / 10 = 82.8%

Therefore, the overall average on the test is 82.8%.