The average height of 30 boys out of a class of 50 is 160 cm. If the a – McqOptions

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1.	The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the wholeÂ class (in cm) is:
A.	161
B.	162
C.	163
D.	164
Answer» C. 163

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