The average height of 22 students of a class is 140 cm and the average – McqOptions

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1.	The average height of 22 students of a class is 140 cm and the average height of 28 students of another class is 152 cm. What is the average height of students of both classes?
A.	144.32 cm
B.	145.52 cm
C.	146. 72 cm
D.	147.92 cm
Answer» D. 147.92 cm

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