Question

In a class of 40 students 1/5 of the total no. Of students like to study math , 2/5 of the total no. Of students like to study english and remaining like to study computers.
A) how many students like to study math.
B) how many students like to study english.
C) what fraction of the total no. Of students like to study computers

Answer 1

Answer:

A)

$\frac{1}{5} \: of \: total \: no. \: of \: student \\So \\ \frac{1}{5} \times 40 = 8 \\ hence \: \: 8 \: student \: like \: maths$

B)

$\frac{2}{5} of \: the \: total \: no.\\ \: of \: students \\ So \\ \frac{2}{5} \times 40 = 16 \\ hence \: 16 \: students like \: to \: study \: english$

C)

$number \: of \: student \: like \: to \:\\ study \: cmputer\: = 40 - (16 + 8) = 40 - 24 = 16 \\ \\ So \\ fraction \: of \: student \: like \: to \: study \: cmputer\: = \frac{16}{40} = \frac{2}{5}$