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Questions  >>  Olympiad-Math  >>  Class 6  >>  Math  >>  Analytical Reasoning
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Q)

There are 20 students with an average height of 105 cms in a class. Then 10 students with an average height of 120 cms join the class. What will be the average height of the class now?


( A ) 100
( B ) 130
( C ) 120
( D ) 110

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