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 →

A certain painting job requires a mixture of yellow, green,

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 394
Joined: Sun Jul 02, 2017 10:59 amFollowed by: 5 members
Thanked: 1 times
by AbeNeedsAnswers » Tue Apr 30, 2019 5:43 pm

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

A certain painting job requires a mixture of yellow, green, and white paint. If 12 quarts of paint are needed for the job, how many quarts of green paint are needed?

(1) The ratio of the amount of green paint to the amount of yellow and white paint combined needs to be 1 to 3.
(2) The ratio of the amount of yellow paint to the amount of green paint needs to be 3 to 2.

A

Source: Official Guide 2020
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 2623
Joined: Mon Jun 02, 2008 3:17 amFollowed by: 355 members
Location: Montreal
Thanked: 1090 times
GMAT Score:780

by Ian Stewart » Wed May 01, 2019 2:20 am
From Statement 1, 1/4 of the mixture is green paint, and since we know we have 12 quarts of paint in total, we must have 3 quarts of green paint. So Statement 1 is sufficient.

Statement 2 is not sufficient because we have no information about what fraction of the mixture is white paint.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com

ianstewartgmat.com
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members
Location: Palo Alto, CA
Thanked: 2867 times
GMAT Score:800

by [email protected] » Wed May 15, 2019 7:00 pm
Hi All,

We're told that a certain painting job requires a mixture of yellow, green, and white paint and that 12 quarts of paint are needed for the job. We're asked for the number of quarts of GREEN paint that are needed. This question can be answered with ratio-based math and TESTing VALUES.

(1) The ratio of the amount of green paint to the amount of yellow and white paint combined needs to be 1 to 3.

With the information in Fact 1, we have the following relationship:
(Green) : (Yellow + White) = 1 : 3

This means that for every 1 quart of green paint, we have a total of 3 quarts of yellow and white paint, so we can think of this ratio in terms of '4 quart blocks'. With 12 total quarts, we would have 3 of those blocks - meaning that we have 3 quarts of green paint and 9 quarts of yellow+white paint. The actual amounts of yellow and white paint don't matter though, since we're asked for the amount of GREEN paint and we now know that the answer must be 3.
Fact 1 is SUFFICIENT

(2) The ratio of the amount of yellow paint to the amount of green paint needs to be 3 to 2.

Fact 2 gives us a different ratio, but not enough to determine the exact amount of green paint....
IF....
Yellow = 3 quarts, Green = 2 quarts and White = 7 quarts, then the answer to the question is 2.
Yellow = 6 quarts, Green = 4 quarts and White = 2 quarts, then the answer to the question is 4.
Fact 2 is INSUFFICIENT

Final Answer: A

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1