callumalanmonk callumalanmonk

10-03-2021
Mathematics

contestada

25 students in class A did a science exam.
30 students in class B did the same science exam.

The mean mark for the 25 students in class A is 67.8
The mean mark for all the 55 students is 72.0

Work out the mean mark for the students in class B.

Respuesta :

Cherish1234567 Cherish1234567

10-03-2021

Answer:

class B

Step-by-step explanation:

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