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Multiple choice

The average of 13 numbers is 42. If the 14^{th} number is included, then the average becomes 44. What is the 14^{th} number?

  1. 70

  2. 62

  3. 66

  4. 68

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sum of 13 numbers = 13 × 42 = 546. Sum of 14 numbers = 14 × 44 = 616. 14th number = 616 - 546 = 70.

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