Question

A class contains 60 boys and 40 girls. A student is selected at random and what is the probability of that selected student is a girl?

• A. $\frac{1}{3}$
• B. $\frac{1}{2}$
• C. $\frac{4}{5}$
• D. $\frac{2}{5}$

Answer 1

The correct option is D

$\frac{2}{5}$

Total number of students in class = 60 + 40 = 100

Number of girls in class = 40

The probability of the selected student is a girl = $\frac{\text{Number of favourable outcomes}}{\text{Total possible outcomes}}$

= $\frac{40}{100}$

= $\frac{2}{5}$