Mathematics, 11.03.2021 14:00, heidiheffron574
10 girls and 15 boys sit a test.
The mean mark for the boys is 70. The mean mark for the girls is 82.
Work out the mean mark for the whole class.
Answers: 1
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Do you know the correct answer?
10 girls and 15 boys sit a test.
The mean mark for the boys is 70. The mean mark for the girls is 8...
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