average height of 15 student of class 6 is 140cm and average heightof 10 student of class 7 is 145cm. what is the average height of the student of both the classes?
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average height of class 6=140
average height of class 10=+145
140+145=185
average height of class 10=+145
140+145=185
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average height of 15 student of class 6 is 140 cm and average height of 10 result of class 7 in 145 cm what is the average height of the Student Of the classes
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