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

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Three Part Ration Question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 1560
Joined: Tue Nov 17, 2009 2:38 amFollowed by: 5 members
Thanked: 137 times

by thephoenix » Wed Mar 10, 2010 7:23 pm
gmatassistance wrote:The incomes of A and B are in the ratio 4:5 and their expenditures are in the ratio of 5:6. If A saves 1/4th of his income find the ratio of their savings.
imo their savings are equal so ratio is 1:1

lete income of A=4x and B=5x
let exp of A=5y and B=6y

saving of A=5y-4x
and B=6y-5x

saving of A=1/4(4x)=x
----->5y-4x=x---->y=x

substituting we get saving for A and B as x
i.e 1:1
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Wed Dec 16, 2009 4:10 am

by raisethebar » Thu Mar 11, 2010 1:58 am
thephoenix wrote:
gmatassistance wrote:The incomes of A and B are in the ratio 4:5 and their expenditures are in the ratio of 5:6. If A saves 1/4th of his income find the ratio of their savings.
imo their savings are equal so ratio is 1:1

lete income of A=4x and B=5x
let exp of A=5y and B=6y

saving of A=5y-4x
and B=6y-5x

saving of A=1/4(4x)=x
----->5y-4x=x---->y=x

substituting we get saving for A and B as x
i.e 1:1
I guess you missed something

income -expenditure = saving
4x - 5y =x
so 3x -5y=0
3x=5y

y=3x/5

substititing this value we get B's saving as 7x/5 so A's saving : B's saving =1:7/5
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 610
Joined: Fri Jan 15, 2010 12:33 amFollowed by: 2 members
Thanked: 47 times

by kstv » Thu Mar 11, 2010 9:57 pm
The incomes of A and B are in the ratio 4:5 and their expenditures are in the ratio of 5:6. If A saves 1/4th of his income find the ratio of their savings.

Assume income of A & B are 4x and 5x as the ratios are 4:5.
A saves 1/4 of 4x = x
So his expenditure is 3x
B's expenditure is 6/5 of 3x = 18x/5 his savings is 5x-18x/5 = 7x/5
Ratio of saving is 5: 7

This post should not be in DS.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1