Mathematics
Grade10
Easy

Question

The mean of 12, 14, 18, 20 and x is equal to 14. Solve for x.

  1. 20
  2. 12
  3. 5
  4. 14

hintHint:

fraction numerator 12 plus 14 plus 18 plus 20 plus x over denominator 5 end fraction=14

The correct answer is: 14


    Mean = 14
    fraction numerator 12 plus 14 plus 18 plus 20 plus x over denominator 5 end fraction equals 14
    12 + 14 + 18 + 20 + x = 70
    64 + x = 70
    x = 6

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