Mathematics · Averages
The average marks of 120 students in a class is [x + 20]. The ratio of passed to failed students in the class is 2:1. The average marks of the top 40% of the students who passed the exam is equal to the average marks of the entire class. The average marks of the remaining students who passed the exam is 2x. If the average marks of the students who failed the exam is 38, then find the value of x.
- 125
- 220
- 330✓
- 432
Correct answer
30
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