Bissoy.com
Doctors Medicines MCQs Q&A

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group? Correct Answer 32 years

Total age of 10 students = 20×10 = 200 Total age of 12students = (20 + 2)12 = 264∴ age of 2 new students = 264 - 200 = 64average = 64/2 = 32

Related Questions

Questions below followed by three quantities. Find the relationship between them. Quantity I: Average age of 14 members of team is 25 years. While oldest member of the team is 26 years older than youngest member of the team. Out of remaining 12 members of team, average age of six members of team is 28 years and the remaining six members is 20 years. What is the age of oldest member of the team? Quantity II: Average age of Nitu, Rekha and Shyam is 17 years. Two new persons Divya and Raju joined them so that average age of all become 19 years. If Divya is 2 years older than Raju and Rekha is 2 years older and 1 year older than Shyam and Nitu respectively. What is sum of the average age of Nitu and Shyam together and average age of Divya and Rekha together? Quantity III: The average age of father, mother and their two sons is 27.5. Five years ago, the ratio of ages of father, mother and two sons (elder and younger) is 7 : 5 : 2 : 1. Find the sum of ages of two sons after 7 years.
Quantity I: The average age of a cricket team of 11 players is x years. After three years, four players leave the team and four new players join in place of them then the current average age becomes (x + 2) years. The current average age of the players who left the team was 18 years then find the average of the current age of the 4 new joiners? Quantity II: In a group of 6 students, the average age of the 5 youngest students is 12 years and the average age of the 5 oldest students is 15 years. What is the average age of all the students? (it is given that the age of them is in arithmetic progression)?
Given below are quantities named A,B and C. Based on the given information, you have to determine the relation between the quantities. You should use the given data and your knowledge of mathematics to choose among the possible answer. Akash’s present age is six years less than Badshah’s age after nine years. The ratio of present age of Badshahand RAFTAAR is 5:9. Raftaar is 21 years younger than Denny and Denny is three years older than Honey. Square of the Honey’s present age is 1350 more than 15 times of Honey’s present age? Quantity A: What is the difference between AKASH’s present age and HONEY’s age after 16 years? Quantity B: After 6 years Mankirat’s age is twice that of Akash’s present age. Diljeet’s present age is 3.5 times of 25% of sum of present age of Mankirat and A. What is the present age of Diljeet? Quantity C: Twice of A’s present age is eight years more than that of Babbu’spresent age, then find the Babbu’s present age?
In a company there are 252 engineers, in which the ratio of the number of electronics engineers and computer engineers is 2 ∶ 1. The ratio of the number of electronics engineers and computer engineers becomes 1 ∶ 1 after recruitment of some more computer engineers. The average age of all the engineers is now 22 years and the average age of the computer engineers is 2 years less than the average age of electronics engineers. (A) The average age (in years) of electronics engineers is 21 (B) The average age (in years) of computer engineers is 21 (C) The average age (in years) of electronics engineers is 23 (D) The average age (in years) of electronics engineers is 25 (E) The average age (in years) of computer engineers is 23 Choose the correct answer from the options given below: 
Each question below is followed by two statements I and II. You have to determine whether the data given in the statements are sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer. What is the average weight of new students added? I. In a class 60% students are male and there average weight is 15 kg more than the female students, 9 males and 6 new female students joined the class and the average weight of the class increased by 0.84 II. Total male students in the class is 12 more than female students adding 9 male students to the class increases the average weight of male students by 1 kg and adding 6 female students increases the average weight of female students by 0.6.
For a trip, the average age of 45 students is 20 years. If two students cancelled due to an emergency so three teachers joined the student's group. The new average age of group for the trip is 21 years. What will be the approximate average age of three teachers group if the average age of two students who cancelled their trip is 19 years?
Average age of 20 students is 21 years. 2 students leave the group and 1 new student joins the group. The average now becomes 20 years. If age ofone of the student who left the group is 26 years and the one who joined is 20 years, then what is the age (in years) of the other student who left the group?
In a school, the number of students who are above 15 years is 20% and the rest are below 15 years. The number of girls who are above 15 years of age is 80% of the students who are above 15 years of age. The number of boys who are below 15 years of age is 30% of the students who are below 15 years of age. If the total number of girls who are below 15 years of age is 1120, then, find the number of boys who are above 15 years of age in the school?
Sum of ages of Ajay, Bharti and Dhruv is 10 years more than the sum of ages of Bharti, Dhruv and Tara. Chaten is 6 year older then Bharti and 2 years younger than Dhruv. What is the ratio of present age of Ajay and Chaten? Which of the following option is sufficient alone to find the answer? A) Age of Chaten after 13 years will be 35 years. B) Sum of present age of Bharti, Chaten and Dhruv is 47 years. C) Sum of present age of Ajay, Tara and Chaten is 48 years. D) Sum of present age of Bharti and Dhruv is 24 years and Ajay and Chaten is 30 years. E) Average of recent age of Ajay and Bharti is 2 more than the average of age of Bharti and Dhruv.
The average age of a group o f10 students was 20. The average age increased by 2 years when two new students joined the group students who joined the group?