Question

The mean of 29 numbers is 45.

A number is added and the mean becomes 46.

Determine the value of the new number.

Answer 1

Answer:

the added number is 29

Step-by-step explanation:

let the sum of observations be x then

x/29 = 45 [given]

x = 45*29

now let the number added be n, then the new mean will be:

(x+n)/29 = (45*29+n)/29

and

(45*29+n)/29 = 46 [given]

n = (46*29)-(45*29)

n = 29(46-45)

n = 29

HOPE IT HELPS :D