5 students scored more than 70.
40% of 50 (20) students scored below 55.
That leaves (50-25) students scoring between 55-70. What percentage is that?
There are fifty students in a class. In a 100 marks exam, 20 students scored less than 30 marks, 5 students scored more than 70 marks and the remaining scored between 30 and 70 marks. If passing score is 55 marks and 40% students have passed the test, what is the percentage of students who scored between 55 and 70?
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