Question

mean of 6 numbers is 8,what should be added to it,to make the mean 9

Answer 1

6 should be added to it

Answer 2

Mean of 6 numbers is 8.

Sum of the six numbers/6=8

Sum of the six numbers=48

If one number is added to it,

Let the number be x

(Sum of six numbers+x)/7=9

(48+x)/7=9

48+x=63

x=63-48

x=15

15 should be added to it

Answer is 15.