Question

the mean of 15 numbers is 27. if each number is multipled by 4 what will be the mean of the new number​

Answer 1

Answer:

108

Step-by-step explanation:

mean = x1 + x2+ x3 till xn= 27

                                15

x1+x2+x3 till xn = 27* 15 = 405

(when multiplied by 4)

4(x1+x2+x3 till xn ) = 4(405)

              15

when multiplied by 4:  

ans:   4(405)

            15

= 108