Respuesta :

Answer:

38

Step-by-step explanation:

Steps to determine answer

  1. determine the sum of the 5 numbers. this can be achieved by multiplying 5 by their mean
  2. Derive the sum of numbers for the 4 numbers
  3. Subtract the answer gotten from step 2 above from the answer gotten in step 1

Mean = sum of numbers / total number

30 = sum of numbers / 5

sum of numbers = 30 x 5 = 150

28 = sum of numbers / 4

Sum of numbers = 28 x 4 = 112

Difference = 150 - 112 = 38

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