The average height of students in a class of 20 is 105 cm.If 10 students of average height of 120 cm are added to the class what will be the average height of the students in the class?

Question:The average height of students in a class of 20 is 105 cm.If 10 students of average height of 120 cm are added to the class what will be the average height of the students in the class?

1.117.5 cm

2.116 cm

3.110 cm

4.108 cm


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