marks 10-20 20-30 30-40 40-50 50-60 and no. of students 10 20 3 15 2. if 60 percent of studrnt pass in this test find minimum passing marks.
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Minimum passing marks are between 20-30.
Step by step explanation
We have given:
Marks range No. of students
- 10-20 10
- 20-30 20
- 30-40 03
- 40-50 15
- 50-60 02
Total marks are = 60
Total students are = 60
60 percent students pass :
60*60/100 = 36
36 students have passed the exam
Total no. of students in the range of 20-60 = 50
Total no. of students in the range of 20-30= 20
so, 50-20=30
We know that total no. of students who have cleared the exam are = 36
so, we will take 6 students from the range of 20-30.
Thus, minimum passing marks would be in the range of 20-30.
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