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

Redeem

PS Practice test question #7

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pm
Location: INDIA
Thanked: 84 times
Followed by:3 members

Re: PS Practice test question #7

by sudhir3127 » Thu Aug 21, 2008 9:37 pm
missionmba wrote:I knew 30% was not correct but still :D
the technique for this question is to read it carefully and understand what he is asking..it a very very cleverly worded problem..

he just wants us to take find out what % is 10 out of 80

10/80 = 12.5%..


If u find it difficult to understand that... use the more conventional method of solving ..using equations..

Let 100 be the total no of motorist

10 percent of the motorists exceed the posted speed limit and receive speeding tickets = 10% of 100 = 10

Let x be the no of motorist who exceed the limit.

Hence we have the equation :
x = 0.2x + 10
x = 10/0.8 = 12.5

i hope it helps...
Top
Master | Next Rank: 500 Posts
Posts: 288
Joined: Thu Jul 31, 2008 10:54 pm
Location: Bombay, India

by missionmba » Fri Aug 22, 2008 5:33 am
sudhir3127 gr8 man!!!!

can v solve the que with help of venn diag?

I know its not possible to draw the diag here :D

but i m sure u know how to explain it. :wink:
Mission Mba

Everyone has a will to win but very few have the will to prepare to win
Top
Legendary Member
Posts: 891
Joined: Sat Aug 16, 2008 4:21 am
Thanked: 27 times
Followed by:1 members
GMAT Score:660(

by 4meonly » Fri Aug 22, 2008 7:34 am
I can show this Q by picture

___________________ 100% (100 people) ______________________________

exceeded - x%...............................│........... not exceeded
___________________________________________________________________
20% - no ticket │80% - got ticket.....│
10% from total- 10 people


Proportion:

80 - 10
100 - x
x=12,5

12,5 people exceeded :-)
Top
Post new topic Post Reply
• Page 1 of 1