In a Maths test the average score of the 10 girls in a class is 15 and the average score of the 15 boys is 10. The average score of the class in the test is
12
12.5
13
12.75
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Step-by-step explanation:
Average score of boys - 10
Average score of girls - 15
Number of boys - 15
Number of girls - 10.
Hence,
total average of class
= 15 + 10/ 15+10
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