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 whole class (in cm) is:
A) 161 B) 162 C) 163 D) 164
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12
Answer:
(30x160+20x165)/50=162
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2
Your ans is given below
162
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