a) 20 b) 21 c) 22 d) 23 Answer: b Explanation: Let the total number of workers ...
View QuestionOut of 10 teachers of a school, on teacher retires and in place of him a new teacher 25 years old joins. As a result of it average age of the teachers reduces by 3 years. Age of the retired teacher ( in years) is :
a) 55 b) 60 c) 58 d) 56 Answer: a Explanation: Total number ...
View QuestionMr. Joe’s family consists of six people-himself, his wife and their four children. It is known that the average age of the family immediately after the birth of the first, second, third and fourth child was 16, 15, 16 and 15 years respectively. Find the age of Mr. Joe’s eldest son if the present average age of the entire family is 16 years
a) 8 years b) 12 years c) 15 years d) 16 years Answer: b Explanation: ...
View QuestionA grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
a) Rs. 4991 b) Rs. 5991 c) Rs. 6001 d) Rs. 6991 Answer: a Explanation: ...
View QuestionA family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
a) $$28\frac{4}{7}$$ years b) $$31\frac{5}{7}$$ years c) $$32\frac{1}{7}$$ years d) None of these Answer: b Explanation: $$\eqalign{ ...
View QuestionIn the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
a) 6.25 b) 6.5 c) 6.75 d) 7 Answer: a Explanation: $$\eqalign{ & {\text{Required run ...
View Question3 years ago the average 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 years b) $$\frac{3}{2}$$ years c) 2 years d) 3 years Answer: c Explanation: ...
View QuestionA 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 km/hr b) 37 km/hr c) 37.5 km/hr d) 40 km/hr Answer: c Explanation: Average ...
View QuestionThe 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 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 Answer: a Explanation: ...
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