the average marks obtained by a class 40 students is 40 and the average marks obtained by another class of 60 students is 60. find the combined average?
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Answer:
Avg of all students is 52.5
Use formula (total marks of students from class A)*(total marks of students from class B) / (total no of students)
to find total marks of students, you need to multiply the corresponding avg value with the its strength.
Explanation:
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