The average of 10 numbers is 40. When one more number is added, the average becomes 42. What number was added?

  1. 64
  2. 62
  3. 72
  4. 60
Answer

B) 62

Old total = 10 40 = 400; new total = 11 42 = 462; added number = 62.

Quantitative Reasoning MCQ · More Percentages, Ratios & Averages MCQs · Practise