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  • 21-09-2019
  • Mathematics
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The mean of four number is 14.If two numbers, x and x + 2 are added to the set of data, the new mean is 15.calculate the value of x​

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Estellia
Estellia Estellia
  • 21-09-2019

Answer:

[tex]x = 16[/tex]

Step-by-step explanation:

Mean = Total ÷ Number of Data

Total = 14 × 4 = 56

Total after = 15 × 6 = 90

Difference = 90 - 56 = 34

Hence,

[tex]x + x + 2 = 34[/tex]

[tex]2x = 32[/tex]

[tex]x = 16[/tex]

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