In a test called of AMCAT, the average marks of 15 test takers is 240. If the…
2025
In a test called of AMCAT, the average marks of 15 test takers is 240. If the marks of 5 test takers are subtracted, the average marks decreases by 40. What is the average marks of 5 test takers?
- A.
1600
- B.
320
- C.
200
- D.
40
Attempted by 7 students.
Show answer & explanation
Correct answer: B
First, calculate the total marks of all 15 test takers: 15 × 240 = 3600.
After removing 5 test takers, there are 10 remaining. The new average is 240 - 40 = 200.
Calculate the total marks of these 10 test takers: 10 × 200 = 2000.
The sum of marks for the 5 removed test takers is 3600 - 2000 = 1600.
Finally, divide by 5 to find their average: 1600 / 5 = 320.