Question

fifty students give a test. The result of those students
who scored less than 60% marks is given as :
Marks - number of students
0-10 - 8
20-30 - 12
20-30 - 20
If the average marks of the student was 25. Find out the average marks for those who get 60% or more. ​

Answer 1

Answer:

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Explanation:

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