- Have any questions?
- [email protected]
- Home
- The average mark of 40 students is 45.
Question 1:
The average mark of 40 students is 45. But after checking, marks of two students were corrected. After correction, if a student got 45 marks more and the other student got 15 marks less,then what will be the adjusted average?
A. 56.47
B. 65.75
C. 45.75
Feedback Given, Number of students = 40
Average marks of 40 students = 45
=> Total marks of 40 students = Average marks × Number of students
=> 45 × 40 = 1800
Given, After correcting 2 students marks, one student got 45 more marks and other student got 15 less marks
=> After adjustment, Total marks of 40 students = 1800 + 45 - 15= 1830
Now, the required Adjusted Average marks= Total marks After adjustment / Number of students
= 1830 / 40
=> 45.75
Therefore, the Adjusted Average marks = 45.75
Average marks of 40 students = 45
=> Total marks of 40 students = Average marks × Number of students
=> 45 × 40 = 1800
Given, After correcting 2 students marks, one student got 45 more marks and other student got 15 less marks
=> After adjustment, Total marks of 40 students = 1800 + 45 - 15= 1830
Now, the required Adjusted Average marks= Total marks After adjustment / Number of students
= 1830 / 40
=> 45.75
Therefore, the Adjusted Average marks = 45.75
D. 40.75
These questions are from this test. Would you like to take a practice test?