the average height of 74 students in a class is 168 cm out of which 42 student

Question

the average height of 74 students in a class is 168 cm out of which 42 students had an average height of 170 cm. find the average height of the remaining 32 students.

Options:

A . 165

B . 145

C . 175

D . 155

Answer: Option A
Explanation :

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