Question

Question 119
$\frac{1}{6}$ 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

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

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

$\therefore$ Number of below average students
$=1-[\frac{1}{6}+\frac{1}{4}]$ of the class students

$=1-\left[\frac{2+3}{12}\right]$

$=1-\frac{5}{12}=\frac{7}{12}$ of the class students

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

$\therefore$ Number of below average students $=\frac{7}{12}\times 48=28$

So, the number of below average students are 28.