Instruction 4.1
Mothers Against Drunk Driving is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasised the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analysed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:

-Referring to Instruction 4.1,given alcohol was involved,what proportion of accidents involved a single vehicle?
A) 120/400 or 30%
B) 120/170 or 70.59%
C) 50/170 or 29.41%
D) 50/75 or 66.67%

Question

Instruction 4.1
Mothers Against Drunk Driving is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasised the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analysed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:
 
-Referring to Instruction 4.1,given alcohol was involved,what proportion of accidents involved a single vehicle?
A) 120/400 or 30% 
B) 120/170 or 70.59% 
C) 50/170 or 29.41% 
D) 50/75 or 66.67%

Quizplus · Accepted Answer

To find the proportion of accidents involving a single vehicle when alcohol was involved, we need to look at the bottom row (alcohol involved) and the first column (single vehicle). From the table, we see that there were 50 accidents that involved both alcohol and a single vehicle. Out of the total number of accidents where alcohol was involved (170), the proportion is 50/170 or 29.41% (option C).

Instruction 4.1 Mothers Against Drunk Driving Is a Very Visible Group Whose