Question

The average height of a class of 40 students is 156.5 cm. If one student with a height of 146 cm leaves the class and a new student joins the class, then the average height increases by 0.5 cm. The height of the new student is

Answer 1

Answer:

156.5*40=total height of all students

6260-146=6114cm I. E. Height after the elimination of that student

Let the height of new student =x

(6114+x)/40=156.5+0.5

x=(157*40)-6114

x=116cm