remainder problem with decimals OG 12th edition PS#106

[This topic has 2 member replies]
Forum Index GMAT Math Problem Solving
Free $100 Amazon.com Gift Card - Buy a GMAT course using a Beat The GMAT discount code between Mar 8-22 and get a $100 Amazon.com Gift Card. Learn more!
Post New Topic   Post Reply

bynddrvn
Just gettin' started!

Default Avatar

Joined: 16 Apr 2009
Posts: 18

Thanks given: 0
Thanked 0 times in 0 posts
Location: Boston

Test Date: Summer 2010
Target GMAT Score: 700
Topic: remainder problem with decimals OG 12th edition PS#106
PostMon Oct 05, 2009 7:27 am
Elapsed Time:
00:00
 Lap   Why a timer is critical to improving your score
I am confused by the Official Guide's explanation of question #106 in the problem solving section. It is an easy question remainder problem, but the decimal is throwing me off.

"When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?"

The answer should be 75, but I am having trouble coming up with this answer. Not sure what I am missing, probably something simple.
Back to top
View user's profile Send private message
vivekjaiswal
Really wants to Beat The GMAT!

Default Avatar

Joined: 15 Sep 2009
Posts: 107

Thanks given: 14
Thanked 6 times in 6 posts
Location: Pune, India

Test Date: Still Planning
Target GMAT Score: 730+
GMAT Score: 630
PostMon Oct 05, 2009 7:50 am
bynddrvn wrote:
I am confused by the Official Guide's explanation of question #106 in the problem solving section. It is an easy question remainder problem, but the decimal is throwing me off.

"When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?"

The answer should be 75, but I am having trouble coming up with this answer. Not sure what I am missing, probably something simple.
since by doing x/y you get a remainder of 9, and in decimal terms x/y = 96.12 we know that the remainder divided by y gives us 0.12.
So we get 9/y=0.12 => 900/12=y => y=75

HTHs,
Vivek
Back to top
View user's profile Send private message
bynddrvn
Just gettin' started!

Default Avatar

Joined: 16 Apr 2009
Posts: 18

Thanks given: 0
Thanked 0 times in 0 posts
Location: Boston

Test Date: Summer 2010
Target GMAT Score: 700
PostTue Nov 03, 2009 9:10 am
Just noticed that a couple of people were stuck on this problem, here is a link to another run through the solution.

http://www.beatthegmat.com/x-y-96-12-t47616.html
Back to top
View user's profile Send private message
Display posts from previous:   

Post New Topic   Post Reply All times are GMT - 7 Hours
Page 1 of 1
 
Forum Index GMAT Math Problem Solving
Most Active Members in Last 30 Days
1. harsh.champ 621 posts
2. shashank.ism 430 posts
3. ajith 342 posts
4. thephoenix 337 posts
5. money9111 332 posts
See More Top Beat The GMAT Members
Most Active Experts in Last 30 Days
1. lunarpower
Manhattan GMAT Teacher 		85 posts
2. Stuart Kovinsky
Kaplan GMAT Teacher 		71 posts
3. Lisa Anderson
Stacy Blackman Consulting 		50 posts
4. Testluv
Kaplan GMAT Teacher 		50 posts
5. Bryant@VeritasPrep
Veritas Prep 		30 posts
See More Top Beat The GMAT Experts