BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

hi - can anyone help me solve this one pls

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 12
Joined: Tue Jul 15, 2008 1:53 am

hi - can anyone help me solve this one pls

by swati.arunahuja » Tue Jul 15, 2008 2:15 am
Ques - On a certain road 10 percent of the motorists exceed the posted speed limit and receive speeding tickets, but 20 percent of the motorists who exceed the posted speed limit do not receive speeding tickets. What percent of the motorists on the road exceed the posted speed limit?

Answers - 10.5%, 12.5%, 15%, 22%, 30%. Thanks :)
Top
Source: — Problem Solving |
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pm
Location: INDIA
Thanked: 84 times
Followed by:3 members

by sudhir3127 » Tue Jul 15, 2008 2:53 am
are you sure about the question and the answer choices?
Top
Junior | Next Rank: 30 Posts
Posts: 12
Joined: Tue Jul 15, 2008 1:53 am

by swati.arunahuja » Tue Jul 15, 2008 3:34 am
yes - i got the question from one of the ETS test papers
Top
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pm
Location: INDIA
Thanked: 84 times
Followed by:3 members

by sudhir3127 » Tue Jul 15, 2008 3:50 am
i guess the answer is 12.5

Let's say total number of motorists is X and total number who exceed spped limit is Y.We are looking for Y/X

its says 10% exceed the speed limit and caught and 20% though exceed but dont get caught.. hence 80 exceed and get caught as well.

thus it implies 10%X = 80%Y there fore Y/X = 12.5%

let me know if the answer is right.
Top
Junior | Next Rank: 30 Posts
Posts: 12
Joined: Tue Jul 15, 2008 1:53 am

by swati.arunahuja » Tue Jul 15, 2008 4:04 am
sudhir3127 wrote:i guess the answer is 12.5

Let's say total number of motorists is X and total number who exceed spped limit is Y.We are looking for Y/X

its says 10% exceed the speed limit and caught and 20% though exceed but dont get caught.. hence 80 exceed and get caught as well.

thus it implies 10%X = 80%Y there fore Y/X = 12.5%

let me know if the answer is right.
yep - spot on, thanks a tonn
Top
Post new topic Post Reply
• Page 1 of 1