General Aptitude › Average › Question #4597
Single Choice Not Set

QThe average marks of three classes of 45, 60, and 55 students are 60, 55, and 50, respectively. What is the average marks of all the students?

ID: #4597 Average 194 views
Question Info
#4597Q ID
Not SetDifficulty
AverageTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A 54.68 ✔ ✖
  • B 54.88 ✔ ✖
  • C 34.58 ✔ ✖
  • D 24.65 ✔ ✖
Correct Answer

Explanation

The average marks of all the students is 54.68.
To find this, we can use the following steps:
The average marks of the three classes of 45, 60, and 55 students are 60, 55, and 50, respectively.
The total number of students in the three classes is 45 + 60 + 55 = 160.
The total marks of the three classes are 45 * 60 + 60 * 55 + 55 * 50 = 2700 + 3300 + 2750 = 8750.
Therefore, the average marks of all the students is 8750 / 160 = 54.68.

 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

If the average of Sohan's marks in six subjects is 74 and his average in five subjects excluding science is 70, how many marks did he get in science?... What is the corrected mean of 40 observations, given an initial mean of 46, when it is discovered that one of the observations, which was recorded as 33, should have been recorded as 38?... The average age of a group of 30 boys is 16 years, and a boy of age 19 leaves the group. A new boy joins the group, and the average age of the group becomes 15.8 years. What is the age of the new boy?... The average of odd numbers upto 100 is___... The average of the first nine prime numbers is... The average salary of workers of a factory is RS6000,while the average salary of technicians is RS12000 and that of non-technicians is RS3750.Find the total number of workers in the factory?... 13 chairs and 5 tables were bought for rs 8280.If the average cost of a table be rs.1227.What is the average cost of a chair?... 2 years ago, the average age of a family of 5 members was 16 years. After a baby is born, the average age of family is the same today. Find the present age of the baby.... The average score of girls in class X examination in a school is 73 and that of boys is 71.The average score in class X of that school is 71.8.Find the percentage of the number of girls and boys in class X of ... The average of five numbers is 58.Yhr average of the first two numbers is 48.5 and the average of last two numbers is 53.5.What is the third number?...