Question

The average of 8 number is 21. If each of the
Number is multiplied by 8, the average of the new
set of numbers is​

Answer 1

Answer:

168

Step-by-step explanation:

x₁+x₂+x₃..........x₈/8 = 21...(i)

⇒8x₁+8x₂+8x₃..........8x₈/8 = 8(x₁+x₂+x₃..........x₈) / 8

⇒x₁+x₂+x₃..........x₈= 8 × 21 [from (i)]

⇒168