Question

the mean of 12 number is 40. if each number is divided by 8,what will be the mean of the new number

Answer 1

the mean of 12 no. = 40
let sum of no. = x
then x/12=40
x= 40x12 = 480
if every no. divided by 8 then
new sum of no. = 480/8 = 60
new mean = 60/12 = 5 ans.