1
Question
The times (in seconds) taken by 150
athlete to run a 110 m hurdle race are tabulated below
Class13.8−1414−14.214.2−14.414.4−14.614.6−14.814.8−15Frequency245714820
The number of athletes who completed the race in less than 14.6 seconds is _______.
- 82
The times (in seconds) taken by 150
athlete to run a 110 m hurdle race are tabulated below
Class13.8−1414−14.214.2−14.414.4−14.614.6−14.814.8−15Frequency245714820
The number of athletes who completed the race in less than 14.6 seconds is _______.
- 82
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Solution
The correct option is A 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
∴ The number of athletes who completed the race in less than 14.6 seconds
= 2 + 4 + 5 + 71
= 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
∴ The number of athletes who completed the race in less than 14.6 seconds
= 2 + 4 + 5 + 71
= 82
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