Question

The table below gives the ages of 120 drivers of cars involved in accidents during a certain year. Complete the table and draw a pie diagram.

Age of driver (in years)	Number of drivers	Central angle
Under 20	25	75°
20 – 40	50	`square`
40 – 60	35	105°
Over 60	10	30°

Answer 1

1. Completed table

Age of driver (in years)	Number of drivers	Central angle
Under 20	25	75°
20 – 40	50	\[\boxed{150°}\]
40 – 60	35	105°
Over 60	10	30°
Total	120	360°

2. Pie diagram