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4. 4 and an unknown number have average smaller than 10, the greatest possible value of unknown number is?

Correct answer: B. 15

  • A. 14
  • B. 15
  • C. 20
  • D. 16

Explanation

Let's denote the unknown number as xThe average of 4 and x being smaller than 10 can be expressed as:4+x/2= 10Files sale with genuine Chce todayNow, let's solve for4+x < 20Subtracting 4 from both sides:x<16So, the greatest possible value for x is 15, making option (b) 15 the correct answer.

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