Paper 1 · Statistics & Probability

Mary drew the pie chart shown to illustrate the time she spent on her homework in one week. The chart shows Mathematics as a right angle (90°), Science as $50°$, English as $3x°$ and Other subjects as $(60+x)°$. Calculate the value of $x$.

Tap to enlarge

ZIMSEC math_o Paper 1, Jun 2000, Q701