Aptitude Solved Problems - Average
Aptitude Solved Problems - Average Bright Zoom Maths, Question : 1 The captain of a cricket team of 11 members is 28 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team? Answer: 25 years Explanation: Let the average age of the whole team be x years Given data, the age of captain of a cricket team = 28 years If the wicket keeper is 3 years older, Then, the age of wicket keeper = 28 + 3 = 31 If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team, Then, new average ⇒ [ 11x - ( 28 + 31 ) ] / 9 = x - 1 [ 11x - 59 ] / 9 = x - 1 ( 11x - 59 ) = 9 ( x - 1 ) ( 11x - 59 ) = 9x - 9 11x - 9x = 59 - 9 2x = 50 x = 25 ∴ The average age of the whole team is 25 years. Question : 2 Out of 9 persons, 8 persons spent R...