On Tuesday, 30 of the students in a class took a test and their average score was On Thursday, the other 5 students took the test, and their average score was What was the average for the entire class?

On Tuesday, 30 of the students in a class took a test and their average score was On Thursday, the other 5 students took the test, and their average score was What was the average for the entire class?

A 83.5%

B 84.5%

C 85%

D 88.2%

Solution

Correct Answer: Option C

Average = (30×83.5)+(5×94) / (30+5)

=85 or, 85%