Question

the mean of 21 numbers is 15 .if each number is multiplied by 2 ..what will be the new mean??

Answer 1

Answer:

30

Step-by-step explanation:

let sum of numbers be x

=> x / 21 = 15

each number is multiplied by 2

=> 2 × x / 21

= 2 × 15

= 30

Hope this will help you.