the average height of 50 pupils in a class is 150 cm. five of them whose heigh

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the average height of 50 pupils in a class is 150 cm. five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. the new average height of the pupils of

Options:

A . 149

B . 151

C . 152

D . 153

Answer: Option B
Explanation :

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