Question

`1/6` of the class students are above average, `1/4` are average and rest are below average. If there are 48 students in all, how many students are below average in the class?

Answer 1

Number of above average students = `1/6` of the class students

Number of average students = `1/4` of the class students

∴ Number of below average students

= `1 - [1/6 + 1/4]` of the class students

= `1 - [(2 + 3)/12]`

= `1 - 5/12`

= `7/12` of the class students

Since, number of students in the class = 48  ...[Given]

∴ Number of below average students = `7/12 xx 48 = 28`

So, number of below average students are 28.