Average Worksheet-5
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The captain of a cricket team of 11 members is 26 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?
(a) 23 years (b) 24 years (c) 25 years (d) None of these
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The average height of 25 boys is 1.4 m. When 5 boys leave the group, then the average height increases by 0.15 m. What is the average height of the 5 boys who leave?
(a) 0.8 m (b) 0.9 m (c) 0.95 m (d) 1.05 m
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The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
(a) 76 kg (b) 76.5 kg (c) 85 kg (d) Data inadequate
(e) None of these
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The average weight of 45 students in a class is 52 kg. Five of them whose average weight is 48 kg leave the class and other 5 students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class?
(a) 
(b) 
(c) 
(d) None of these
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The average age of 8 men is increased by 2 years when two of them whose ages are 21 years and 23 years are replaced by two new men. The average age of the two new men is:
(a) 22 years (b) 24 years (c) 28 years (d) 30 years
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The average of five consecutive numbers is n. If the next two numbers are also included, the average will:
(a) remain the same (b) increase by 1
(c) increase by 1.4 (d) increase by 2
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A cricketer has a certain average for 10 Linings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is:
(a) 48 runs (b) 52 runs (c) 55 runs (d) 60 runs
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A cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and thereby decreases his average by 0.4. The number of wickets taken by him till the last match was:
(a) 64 (b) 72 (c) 60 (d) 85
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A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points, the team scored was:
(a) 588 (b) 645 (c) 665 (d) 672
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A motorist travels to a place 150 km away at an average speed of 50 km / hr and returns at 30 km / hr. His average speed for the whole journey in km / hr is:
(a) 35 (b) 37 (c) 37.5 (d) 40
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The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. The weight of A is:
(a) 70 kg (b) 72 kg (c) 75 kg (d) 80 kg
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The average age of a husband and his wife was 23 years at the time of their marriage. After five years they have a one–year old child. The average age of the family now is:
(a) 19 years (b) 23 years (c) 28.5 years (d) 29.3 years
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Three years ago, the average age of A and B was 18 years. With C joining them, the average age becomes 22 years. How old is C now?
(a) 24 years (b) 27 years (c) 28 years (d) 30 years
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The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
(a) 35 years (b) 40 years (c) 50 years (d) None of these
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3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is.
(a) 1 year (b) 
years (c) 2 years (d) 3 years
Answer Key:
(1)-a; (2)-a; (3)-c; (4)-c; (5)-d; (6)-b; (7)-a; (8)-d; (9)-c; (10)-c; (11)-c; (12)-a; (13)-a; (14)-b; (15)-c
