Question

$\frac{1}{6}$ of the class students are above average$,\frac{1}{4}$ 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

It is given that$,$

Number of students in the class are above average $=\frac{1}{6}$

Number of students in the class are average $=\frac{1}{4}$

We have to determine the number of students who are below average in the class

Number of students in the class are below average$=1–\left[\left(\frac{1}{6}\right)+\left(\frac{1}{4}\right)\right]$

$=1–\left[\frac{2+3}{12}\right]$

$=1-\frac{5}{12}$

$=\frac{12-5}{12}$

$=\frac{7}{12}$ students.

So, the number of students in the class $=48$

Then,

Number of students below average$=\frac{7}{12}\times 48$

$=7\times 4$

$=28$ students

Hence, The number of students in the class are below average are $28$