Multiple choice

Average age of a volleyball team having 6 players is 21 years. If the age of the coach is also included, then the average age increases by 3.5 years. What is the age (in years) of the coach?

  1. 38.5

  2. 39.5

  3. 45.5

  4. 40.5

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

Total age of 6 players = 6 × 21 = 126 years. When coach is included, new average = 21 + 3.5 = 24.5 years for 7 people. Total with coach = 7 × 24.5 = 171.5 years. Coach's age = 171.5 - 126 = 45.5 years.