Q259 / 270 · NDA 2017 (Phase 1) · Mathematics

In an examination, $40 \%$ of candidates got second class. When the data are represented by a pie chart, what is the angle corresponding to second class?

  • A
    $40^{\circ}$
  • B
    $90^{\circ}$
  • Correct answer
    C
    $144^{\circ}$
  • D
    $320^{\circ}$

Solution

First, convert $40 \%$ into fraction $\begin{aligned} & 40 \%=\frac{40}{100}=\frac{2}{5} \\ & \text { Angle }=\frac{2}{5} \times 360=144^{\circ} \end{aligned}$

Hence, the correct answer is option: 'C'.

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