You are a teacher. Your first-period class, with 22 students, had a mean score of 85% on the midterm exam. Your second-period class, with 27 students, had a mean score of 87% on the same exam. Does it follow that the mean score for both classes combined is 86%

Based on the combined average of both classes, we can say that A. Yes, because 85% of 22 plus 87% of 27 is 86% of 49, the total number of students.

What is the combined average of both classes?

First find 85% of 22:

= 22 x 0.85

= 18.7

Then find 87% of 27:

= 23.49

The combined average is:

= (18.7 + 23.49) / (22 + 27 students) x 100%

= 42.19 / 49 x 100%

= 86%

So we can conclude that option A is correct.

Find out more on percentages at https://brainly.com/question/22603224.

Answer Link

You are a teacher. Your​ first-period class, with 22 ​students, had a mean score of 85​% on the midterm exam. Your​ second-period class, with 27 ​students, had a mean score of ​87% on the same exam. Does it follow that the mean score for both classes combined is ​86%

Respuesta :

What is the combined average of both classes?

Otras preguntas

You are a teacher. Your first-period class, with 22 students, had a mean score of 85% on the midterm exam. Your second-period class, with 27 students, had a mean score of 87% on the same exam. Does it follow that the mean score for both classes combined is 86%