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

Redeem

beginners'bin#2

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

beginners'bin#2

by sanju09 » Thu Mar 25, 2010 11:43 pm
A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. What is the present age of the father?
(A) 36
(B) 42
(C) 45
(D) 48
(E) 50

[spoiler]OA C[/spoiler]
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: 537
Joined: Sun Jul 19, 2009 7:15 am
Location: Nagpur , India
Thanked: 41 times
Followed by:1 members

by rockeyb » Fri Mar 26, 2010 1:34 am
Father's age = f

Son's age = s

given f = 3s

after 15 yrs.

father's age = f+15

son's age = s+15

given that f+15 = 2 (s+15 )

f - 2s = 15

we know f = 3s

So f- 2f/3 = 15

[spoiler]f = 45 . C[/spoiler]
"Know thyself" and "Nothing in excess"
Top
Post new topic Post Reply
• Page 1 of 1