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 →

If x = a, y = 2b, z = 3c, and x : y : z = 1 : 2 : 3, then (x + y + z)/(a + b + c)

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 1223
Joined: Sat Feb 15, 2020 2:23 pmFollowed by: 1 member
by BTGModeratorVI » Mon Sep 14, 2020 8:45 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

If x = a, y = 2b, z = 3c, and x : y : z = 1 : 2 : 3, then (x + y + z)/(a + b + c) =

(A) 1/3
(B) 1/2
(C) 2
(D) 3
(E) 6

Answer: C
Source: Nova
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

Re: If x = a, y = 2b, z = 3c, and x : y : z = 1 : 2 : 3, then (x + y + z)/(a + b + c)

by Brent@GMATPrepNow » Tue Sep 15, 2020 6:12 am
BTGModeratorVI wrote: ↑
Mon Sep 14, 2020 8:45 am
 If x = a, y = 2b, z = 3c, and x : y : z = 1 : 2 : 3, then (x + y + z)/(a + b + c) =

(A) 1/3
(B) 1/2
(C) 2
(D) 3
(E) 6

Answer: C
Source: Nova
One approach is to find values for a, b, c, x, y and z that satisfy the given information.

GIVEN: x : y : z = 1 : 2 : 3
So, it COULD be the case that x = 1, y = 2 and z = 3

GIVEN: x = a, y = 2b, z = 3c
If x = 1, then a = 1
If y = 2, we can say that 2 = 2b, which means b = 1
If z = 3, we can say that 3 = 3c, which means c = 1

So, (x + y + z)/(a + b + c) = (1 + 2 + 3)/(1 + 1 + 1)
= 6/3
= 2

Answer: C

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 59
Joined: Tue Oct 01, 2019 5:49 am

Re: If x = a, y = 2b, z = 3c, and x : y : z = 1 : 2 : 3, then (x + y + z)/(a + b + c)

by gentvenus » Tue Sep 15, 2020 11:58 am
If x = 1, y = 2, z = 3
(x + y + z)/(a + b + c)
= 6/3
= 2

C
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1