Question

WE UI
10. The mean height of 20 boys of a class is 150 cm. When a boy leaves the class, the mean
height comes down by 0.5 cm. Find the height of the boy.
11. The mean monthly income of three members of a family is 18000. Another member of the
efs a job, and his
aly income of​

Answer 1

Answer:

svjsjssdeurobacsgfuodjnvsfduepjbsvrgtjt