Question

the mean of 8 numbers is 27 if one number is added then the mean is 26 find the added number​

Answer 1

Answer:

27

Step-by-step explanation:

mean= sum of all numbers / total no of numbers

27=x/8

=> x=216

one number is added

mean=sum + added num / total no of numbers

26=216+y/8+9

=> y=27

added  number is 27

here , let x is sum of all numbers assume

and y is added number assume