1/6 of the class students are above average, ¼ are average and rest are below average. If there are 48 students in all, how many students are below average in the class?
From the question it is given that,
Number of students in the class are above average = 1/6
Number of students in the class are average = ¼
Number of students in the class are below average = 1 – ((1/6) + (¼))
= 1 – ((2 + 3)/12)
= 1 – (5/12)
= (12 - 5)/12
= 7/12 students.
So, the number of students in the class = 48
Then,
Number of students below average = (7/12) × 48
= (7/1) × 4
= 28 students
∴The number of students in the class are below average are 28.
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