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

Redeem

old or younger

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

old or younger

by sanju09 » Sat Jul 10, 2010 4:02 am
Sandra is playing in a tennis doubles tournament. How many years old or younger must her partner be?

(1) The rules say that the average age of the pair of players on each side must be ten years old or younger.

(2) Sandra is eight years old.
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 1179
Joined: Sun Apr 11, 2010 9:07 pm
Location: Milpitas, CA
Thanked: 447 times
Followed by:88 members

by Rahul@gurome » Sat Jul 10, 2010 4:22 am
(1) If there are 2 players A and B and if we add their ages and divide by 2, we should get at least 10. So, the minimum value of combined ages of 2 players can be 20. But this is NOT SUFFICIENT to answer the question.

(2) Sandra is 8 years old, but we don't know about the rules for ages. So, (2) is also NOT SUFFICIENT.

Combining (1) and (2), we get Sandra is 8 years, so her partner's age should be 20 - 8 = 12 years old

[spoiler]The correct answer is (C).[/spoiler]
Rahul Lakhani
Quant Expert
Gurome, Inc.
https://www.GuroMe.com
On MBA sabbatical (at ISB) for 2011-12 - will stay active as time permits
1-800-566-4043 (USA)
+91-99201 32411 (India)
Top
User avatar
Legendary Member
Posts: 1893
Joined: Sun May 30, 2010 11:48 pm
Thanked: 215 times
Followed by:7 members

by kvcpk » Sat Jul 10, 2010 4:27 am
Sandra is playing in a tennis doubles tournament. How many years old or younger must her partner be?

S, P are ages.
what is absolute value of S-P is the question.

(1) The rules say that the average age of the pair of players on each side must be ten years old or younger.

S+P <20

No info about any of their ages. hence INSUFF

(2) Sandra is eight years old.
No info about P. hence INSUFF

combining:
S+P<20
S=8
hence P <12
So S-P can be maximum of 4. which means P can be from 4 to 12 any number.

Hence INSUFF

pick E.
Top
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

by sanju09 » Sat Jul 10, 2010 4:32 am
kvcpk wrote:Sandra is playing in a tennis doubles tournament. How many years old or younger must her partner be?

S, P are ages.
what is absolute value of S-P is NOT the question.

(1) The rules say that the average age of the pair of players on each side must be ten years old or younger.

S+P < or = 20

No info about any of their ages. hence INSUFF

(2) Sandra is eight years old.
No info about P. hence INSUFF

combining:
S+P<20
S=8
hence P <12
So S-P can be maximum of 4. which means P can be from 4 to 12 any number.

Hence INSUFF

pick E.
:twisted:
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
User avatar
Legendary Member
Posts: 1893
Joined: Sun May 30, 2010 11:48 pm
Thanked: 215 times
Followed by:7 members

by kvcpk » Sat Jul 10, 2010 4:43 am
sanju09 wrote:
kvcpk wrote:Sandra is playing in a tennis doubles tournament. How many years old or younger must her partner be?

S, P are ages.
what is absolute value of S-P is NOT the question.

(1) The rules say that the average age of the pair of players on each side must be ten years old or younger.

S+P < or = 20

No info about any of their ages. hence INSUFF

(2) Sandra is eight years old.
No info about P. hence INSUFF

combining:
S+P<20
S=8
hence P <12
So S-P can be maximum of 4. which means P can be from 4 to 12 any number.

Hence INSUFF

pick E.
:twisted:
Oops.. Agree with the <=.
But why is the absolute value wrong?
Top
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

by sanju09 » Sat Jul 10, 2010 4:56 am
kvcpk wrote:
sanju09 wrote:
kvcpk wrote:Sandra is playing in a tennis doubles tournament. How many years old or younger must her partner be?

S, P are ages.
what is absolute value of S-P is NOT the question.

(1) The rules say that the average age of the pair of players on each side must be ten years old or younger.

S+P < or = 20

No info about any of their ages. hence INSUFF

(2) Sandra is eight years old.
No info about P. hence INSUFF

combining:
S+P<20
S=8
hence P <12
So S-P can be maximum of 4. which means P can be from 4 to 12 any number.

Hence INSUFF

pick E.
:twisted:
Oops.. Agree with the <=.
But why is the absolute value wrong?
The meaning of the phrase "How many years old or younger" is "the maximum possible age" here.
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
User avatar
Legendary Member
Posts: 1893
Joined: Sun May 30, 2010 11:48 pm
Thanked: 215 times
Followed by:7 members

by kvcpk » Sat Jul 10, 2010 5:02 am
[quote="sanju09
The meaning of the phrase "How many years old or younger" is "the maximum possible age" here.[/quote]

Is it so?

How many years old or younger must her partner be
I felt it ambiguous, because of "must" in the question.
Top
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

by sanju09 » Sat Jul 10, 2010 5:10 am
="kvcpk"][quote="sanju09
The meaning of the phrase "How many years old or younger" is "the maximum possible age" here.
Is it so?

How many years old or younger must her partner be
I felt it ambiguous, because of "must" in the question.[/quote]

well you have a point, would you like to make a circle out of it? :lol:


Is something ambiguous in this?

If x ≤ n. What is the maximum n?
Last edited by sanju09 on Sat Jul 10, 2010 5:12 am, edited 1 time in total.
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
User avatar
Legendary Member
Posts: 748
Joined: Sun Jan 31, 2010 7:54 am
Thanked: 46 times
Followed by:3 members

by outreach » Sat Jul 10, 2010 5:12 am
S - Sandra age
P - sandra partner age


1
s+p<= 20


2
s=8


1 and 2
p=12

C
-------------------------------------
--------------------------------------
General blog
https://amarnaik.wordpress.com
MBA blog
https://amarrnaik.blocked/
Top
User avatar
Legendary Member
Posts: 1893
Joined: Sun May 30, 2010 11:48 pm
Thanked: 215 times
Followed by:7 members

by kvcpk » Sat Jul 10, 2010 5:18 am
sanju09 wrote:
Is something ambiguous in this?

If x ≤ n. What is the maximum n?
NO.. There is nothing ambiguous in this. Because, it clearly asks for maximum n.

But, the question doesnt say, "At the max, how older/younger can her partner be"
Top
Post new topic Post Reply
• Page 1 of 1