novdenniswewq novdenniswewq
  • 13-01-2022
  • Mathematics
contestada

The mean of nine numbers is 12 , if one of the numbers is removed ,

the mean becomes 13 , What is the number that was removed .

Respuesta :

mhanifa
mhanifa mhanifa
  • 13-01-2022

Answer:

  • 4

Step-by-step explanation:

Mean of 9 numbers is 12.

Total of 9 numbers:

  • 9*12 = 108

Mean of 8 numbers is 13.

Total of 8 numbers:

  • 8*13 = 104

Removed number:

  • 108 - 104 = 4
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