TABLE 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 emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. 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 Table 4-1, what proportion of accidents involved alcohol or a single vehicle?
A) 25/400 or 6.25%
B) 50/400 or 12.5%
C) 195/400 or 48.75%
D) 245/400 or 61.25%

Question

TABLE 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 emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. 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 Table 4-1, what proportion of accidents involved alcohol or a single vehicle?
A) 25/400 or 6.25% 
B) 50/400 or 12.5% 
C) 195/400 or 48.75% 
D) 245/400 or 61.25%

Quizplus · Accepted Answer

To find the proportion of accidents involving alcohol or a single vehicle, we need to add the number of accidents in which alcohol played a role and the number of accidents involving a single vehicle, and then divide this by the total number of accidents. From the table, we see that there were 165 accidents involving alcohol (100 + 60 + 5), and 30 accidents involving a single vehicle. Adding these, we get 195 accidents. Dividing this by the total number of accidents (400) and multiplying by 100%, we get 48.75%. Therefore, the correct answer is C, 195/400 or 48.75%.

TABLE 4-1 Mothers Against Drunk Driving Is a Very Visible Group Whose