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

Redeem

the couple got married?

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

the couple got married?

by sanju09 » Wed Jan 27, 2010 11:50 pm
The average age of a husband and wife at the time of their marriages was 25 years. A son was born to them two years after their marriage. The present average age of all three of them is 24 years. How many years is it since the couple got married?
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9
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: — Problem Solving |
User avatar
Legendary Member
Posts: 1275
Joined: Thu Sep 21, 2006 11:13 pm
Location: Arabian Sea
Thanked: 125 times
Followed by:2 members

by ajith » Wed Jan 27, 2010 11:57 pm
sanju09 wrote:The average age of a husband and wife at the time of their marriages was 25 years. A son was born to them two years after their marriage. The present average age of all three of them is 24 years. How many years is it since the couple got married?
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9
Say it is n years since the couple got married

The sum of ages when the couple got married = 25*2 = 50

The sum of ages of the couple and the kid now = 24*3 = 72 = 50+ 2*n + n-2
=> 3n = 24; n =8
Always borrow money from a pessimist, he doesn't expect to be paid back.
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 » Thu Jan 28, 2010 12:07 am
ajith wrote:
sanju09 wrote:The average age of a husband and wife at the time of their marriages was 25 years. A son was born to them two years after their marriage. The present average age of all three of them is 24 years. How many years is it since the couple got married?
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9
Say it is n years since the couple got married

The sum of ages when the couple got married = 25*2 = 50

The sum of ages of the couple and the kid now = 24*3 = 72 = 50+ 2*n + n-2
=> 3n = 24; n =8
superb
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
Senior | Next Rank: 100 Posts
Posts: 98
Joined: Mon Nov 23, 2009 2:30 pm
Thanked: 26 times
Followed by:1 members

by ace_gre » Thu Jan 28, 2010 12:10 am
I arrived at the same answer ==>8.

h+w = 25*2 = 50
when son was born after 2 yrs, h+w = 54

now h + w +s = 24*3=72

72-54 = 18 = years of h , w and s *3==>6 yrs. so total is 6+2==>8.

Ajith has done it well algebraically :)
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 » Thu Jan 28, 2010 12:14 am
ace_gre wrote:I arrived at the same answer ==>8.

h+w = 25*2 = 50
when son was born after 2 yrs, h+w = 54

now h + w +s = 24*3=72

72-54 = 18 = years of h , w and s *3==>6 yrs. so total is 6+2==>8.

Ajith has done it well algebraically :)
u2rock
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
Post new topic Post Reply
• Page 1 of 1