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16 Apr 2026, 09:10
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
76% (02:40) correct
24%
(02:50)
wrong
based on 72
sessions
History
Date
Time
Result
Not Attempted Yet
Coldaria sent to prison for driving under the influence of alcohol 0.024% of all Coldarian drivers over the holiday weekend. Of the Coldarian drivers who were stopped, 95% were not under the influence, and 60% of those who were under the influence were not sent to prison.
What percent of all Coldarian drivers were stopped over the holiday weekend ?
A) 0.192%
B) 0.24%
C) 1.20%
D) 1.80%
E) 1.92%
What percent of all Coldarian drivers were stopped over the holiday weekend ?
A) 0.192%
B) 0.24%
C) 1.20%
D) 1.80%
E) 1.92%
16 Apr 2026, 21:37
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Let's say total number of all drivers are T
From the given info we can write:
Of the Coldarian drivers who were stopped S, 5% were under the influence
40% of those who were under the influence were sent to prison.
T*(0.024%) = S*(5%)*(40%)
Solving, we get
S/T = 1.2%
(C) is the answer
From the given info we can write:
Of the Coldarian drivers who were stopped S, 5% were under the influence
40% of those who were under the influence were sent to prison.
T*(0.024%) = S*(5%)*(40%)
Solving, we get
S/T = 1.2%
(C) is the answer
24 May 2026, 13:31
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consider total 1000000 people
now here we have 3 more sub category here that makes it more complicated:
a-people who were stopped
b- people who were under influence
c- people who were under influence were sent to prison.
now say num of people stopped = P
now it says 95% were not under influence. that means 5% were under influencfe.
so num of people under influence- (5/100)P
now, it says 60% of those who were under the influence were not sent to prison.
that means 40% under influence were sent to prison.
also first line says, 0.0024% all people under influence were sent to prison.
means, (24/100000) * 1000000 = 240
so this 240 people represent 40% of people under influence and were sent to prison.
240 = (2/5) * (5/p/100)
p= 12000
we need to find what percentage of all people were stopped.
we assumed that P were stopped.
we found P.
P/1000000 = 12000 / 1000000
1.2%
Ans C
now here we have 3 more sub category here that makes it more complicated:
a-people who were stopped
b- people who were under influence
c- people who were under influence were sent to prison.
now say num of people stopped = P
now it says 95% were not under influence. that means 5% were under influencfe.
so num of people under influence- (5/100)P
now, it says 60% of those who were under the influence were not sent to prison.
that means 40% under influence were sent to prison.
also first line says, 0.0024% all people under influence were sent to prison.
means, (24/100000) * 1000000 = 240
so this 240 people represent 40% of people under influence and were sent to prison.
240 = (2/5) * (5/p/100)
p= 12000
we need to find what percentage of all people were stopped.
we assumed that P were stopped.
we found P.
P/1000000 = 12000 / 1000000
1.2%
Ans C
kevincan
