The average height of 12 students of a class is 132.5 cm. If one more – McqOptions

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1.	The average height of 12 students of a class is 132.5 cm. If one more student joins, the average height becomes 131.2 cm. the height of the new student is∶
A.	112.7 cm
B.	122.3 cm
C.	115.6 cm
D.	128.5 cm
Answer» D. 128.5 cm

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