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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
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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.

User AmitSri
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1 Answer

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Answer: The mean mark for class b is 4.2

Step-by-step explanation: All you have to do is 72.0 - 67.8

User Nives
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