Question
Each question contains a statement followed by Quantity
I and II. Read the information clearly and answer your questions accordingly. Quantity I : The average age of 8 members of a family is 26 yrs. When the age of their family doctor is included, the average becomes 28 yrs. Find the age of the family doctor. Quantity II: The average age of 11 players of a team is 24 yrs. When the age of their coach is included, the average becomes 25 yrs. Find the age of the coach.Solution
Quantity I : Total ages of 8 members = 26 × 8 = 208 years. Total ages when family doctor is included = 28 × 9 = 252 years. ∴ Age of family doctor = 252 -208 = 44 years. Quantity II : Total ages of 11 players = 24 × 11 = 264 years. Total ages when their coach is included = 25 × 12 = 300 years. ∴ Age of coach = 300 -264 = 36 years.
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