Question
The average marks of 30 students in Class I is 60. The average marks of some students in Class II is 75. When all students of both classes are taken together, the overall average becomes 69. Find the number of students in Class
The average marks of 30 students in Class I is 60. The average marks of some students in Class II is 75. When all students of both classes are taken together, the overall average becomes 69. Find the number of students in Class
II.
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