Question

The times (in seconds) taken by 150

athlete to run a 110 m hurdle race are tabulated below

$\begin{array}{ccccccc}\text{Class}& 13.8-14& 14-14.2& 14.2-14.4& 14.4-14.6& 14.6-14.8& 14.8-15\\ \text{Frequency}& 2& 4& 5& 71& 48& 20\end{array}$

The number of athletes who completed the race in less than 14.6 seconds is

• A. 11
• B. 71
• C. 82
• D. 130

Answer 1

The correct option is C

82

The number of athletes who completed the race in 13.8 - 14 seconds = 2

The number of athletes who completed the race in 14 - 14.2 seconds = 4

The number of athletes who completed the race in 14.2 - 14.4 seconds = 5

The number of athletes who completed the race in 14.2 - 14.6 seconds = 71

$\therefore$ The number of athletes who completed the race in less than 14.6 seconds

= 2 + 4 + 5 + 71

= 82