| View previous topic :: View next topic |
| Author |
Message |
resilient
GMAT Destroyer!
Joined: 06 May 2007
Posts: 789
Thanks given: 21
Thanked 5 times in 5 posts
Location: Southern California, USA
Target GMAT Score: 710
|
 Posted: Fri Mar 07, 2008 7:52 pm Post subject: manhattan age problem |
 |
|
jane started baby-sitting when she was 18 yrs old. However, she only baby sat children who were, at most, half her age. Jane is currently 32 eyars old, and she stopped baby sitting 10 yrs ago. What s the current age of the oldest person that Jane could have baby sat?
qa is 23, I got the answer of 21.
_________________
Appetite for 700 and I scraped my plate! |
|
| Back to top |
|
 |
|
|
netigen
GMAT Destroyer!
Joined: 18 Feb 2008
Posts: 633
Thanks given: 3
Thanked 23 times in 23 posts
|
| Posted: Fri Mar 07, 2008 8:53 pm Post subject: Re: manhattan age problem |
|
|
| Enginpasa1 wrote: | jane started baby-sitting when she was 18 yrs old. However, she only baby sat children who were, at most, half her age. Jane is currently 32 eyars old, and she stopped baby sitting 10 yrs ago. What s the current age of the oldest person that Jane could have baby sat?
qa is 23, I got the answer of 21. |
You will get the answer if you go by her lower age = 18
when she was 18 the kids she baby sat will be 9 or above
So add 14 (32-18) to 9 = 23 |
|
| Back to top |
|
|
resilient
GMAT Destroyer!
Joined: 06 May 2007
Posts: 789
Thanks given: 21
Thanked 5 times in 5 posts
Location: Southern California, USA
Target GMAT Score: 710
|
| Posted: Sat Mar 08, 2008 12:00 am Post subject: how about this |
|
|
I see your point. However, I am stuck on the older of the two age groups. What if I add the 14 (32-18) TO THE OLDER age of 11. This yields the answer of 25. I am stuck on that now!
_________________
Appetite for 700 and I scraped my plate! |
|
| Back to top |
|
|
Stuart Kovinsky
GMAT Instructor
Joined: 08 Jan 2008
Posts: 1364
Thanks given: 0
Thanked 249 times in 221 posts
Location: Toronto
GMAT Score: 800
|
| Posted: Sat Mar 08, 2008 7:04 am Post subject: Re: how about this |
|
|
| Enginpasa1 wrote: | | I see your point. However, I am stuck on the older of the two age groups. What if I add the 14 (32-18) TO THE OLDER age of 11. This yields the answer of 25. I am stuck on that now! |
She was only able to baby sit 11 year olds when she was 22, which is only 10 years ago, so the 11 year olds that she baby sat would only be 11+10 = 21 years old today.
However, she was able to baby sit the 9 year olds when she was 18, which was 14 years ago. If they were 9 years old 14 years ago, they'd be 23 years old today.
_________________
Stuart Kovinsky, B.A. LL.B.
Academic Manager
Admissions Consultant
Kaplan Test Prep & Admissions
Toronto Office
1-800-KAP-TEST
Learn more about me |
|
| Back to top |
|
|
|
xilef
Rising GMAT Star
Joined: 31 Jan 2008
Posts: 99
Thanks given: 3
Thanked 13 times in 13 posts
|
| Posted: Tue Mar 11, 2008 10:56 am Post subject: |
|
|
I understand the question, but it is very tricky, because the first time I read it I understood it as asking for the age of the oldest person at the time of babysitting not the currently oldest person that was babysat by Jane.  |
|
| Back to top |
|
|
|
|
|
