Question

The number of students in sections A and B are 60 and 70

respectively. The average score in mathematics of students in A is 70 and that of students in A and B together is 63. What is the average score of students of section B in mathematics?

A 57

B 56.5

C 50

D 57.5

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Question

The number of students in sections A and B are 60 and 70

Solution

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