GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video
close

It is currently 29 Nov 2020, 00:37
Register
GMAT Club Tests
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC
The maximum recommended pulse rate R, when exercising, for a
11 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
Tags :
Find Similar Topics 

Show Tags
Hide Tags

User avatar
V
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 68703
CAT Tests
Top Member of the Month
The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  23 Dec 2013, 06:03
1
Expert Reply
11
Bookmarks
00:00
A
B
C
D
E

Difficulty:

5% (low)

Question Stats:

90% (01:05) correct 10% (01:12) wrong based on 1308 sessions

Hide Show timer Statistics

The Official Guide For GMAT® Quantitative Review, 2ND Edition

The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176- 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ?

(A) 40
(B) 45
(C) 50
(D) 55
(E) 60

Problem Solving
Question: 1
Category: Algebra Substitution; Operations with rational numbers
Page: 62
Difficulty: 500


GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT CLUB Forum?
Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:
PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat
DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set
MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
User avatar
V
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 68703
CAT Tests
Top Member of the Month
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  23 Dec 2013, 06:04
1
Expert Reply
SOLUTION:

The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176 - 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ?
(A) 40
(B) 45
(C) 50
(D) 55
(E) 60

Substitute 140 for R: \(140 = 176 - 0.8x\) --> \(\frac{4}{5}x=36\) --> \(x=45\).

Answer: B.
_________________
New to the GMAT CLUB Forum?
Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:
PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat
DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set
MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
avatar
B
JusTLucK04
Retired Moderator
Joined: 17 Sep 2013
Posts: 313
Concentration: Strategy, General Management
Schools: Kelley '18 (M), Mendoza '18 (WL), Duke '18 (D), Goizueta '18 (D), ISB '17 (D), Owen '17 (I)
GMAT 1: 730 Q51 V38
WE:Analyst (Consulting)
GMAT ToolKit User Reviews Badge
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  23 Dec 2013, 11:31
What are we testing here..my multiplication skills?..:(
User avatar
romitsn
Intern
Intern
Joined: 23 Sep 2012
Posts: 20
Concentration: Technology, Operations
GMAT 1: 740 Q50 V40
GPA: 4
WE:Information Technology (Computer Software)
Reviews Badge
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  23 Dec 2013, 16:30
45...is this really a 600 level problem?
User avatar
nutshell
Manager
Manager
Joined: 21 Mar 2011
Status:GMATting
Posts: 105
Concentration: Strategy, Technology
GMAT 1: 590 Q45 V27
GMAT ToolKit User
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  23 Dec 2013, 20:40
2
R=176-0.8X; R-> Maximum recommended pulse rate and X-> Age

Substitute directly and solve:
0.8X=176-140 = 36
X=36/0.8
=> X = 45
(B) is the answer
avatar
arunspanda
Manager
Manager
Joined: 04 Oct 2013
Posts: 148
Location: India
GMAT Date: 05-23-2015
GPA: 3.45
GMAT ToolKit User Reviews Badge
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  24 Dec 2013, 01:53
2
1
Bookmarks
nutshell wrote:
R=176-0.8X; R-> Maximum recommended pulse rate and X-> Age

Substitute directly and solve:
0.8X=176-140 = 36
X=36/0.8
=> X = 45
(B) is the answer


Method I:

Given, R = 176 - 0.8x
Thus, equating R as 140 and solving we get

140 = 176 - 0.8x
or, 0.8x = 176 - 140
or, x = 360/8
or, x = 45

Method II:

In every 10 years, pulse rate, R decreases by 8.
Hence, R decreases by 36 (difference between 176 and 140), when x equals 10 times (36/8) or x= 45.

Answer: Option (B)
avatar
B
itsmeechaitali
Current Student
Joined: 11 Feb 2017
Posts: 7
Location: India
Schools: HBS 2+2 '21 (D), Stern '19 (D), YLP '19 (S), Duke Fuqua (II), LBS (II)
GMAT 1: 710 Q49 V38
GPA: 3.71
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  12 Feb 2017, 03:44
The question is a straightforward Formulas problem.
We are initially given the formula i.e. the equation for Maximum Pulse Rate (R) in terms of age x. Further, we are supposed to find out the age for someone whose maximum pulse rate is 140.
So now, for the equation R=176 - 0.8x, we substitute R=140 and solve for x.
Hence, 140=176-0.8x
Therefore, 0.8x=36
Therefore, x=45.
avatar
B
clee920
Current Student
Joined: 09 Nov 2016
Posts: 10
GMAT 1: 710 Q47 V40
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  07 Jun 2017, 20:10
Plug in the given rate:

1) 140 = 176 - .8x

Simplify (move the negative value to the left):

2) .8x = (176-140)

To make calculations simpler, get rid of the decimal:

3) 8x = 360

Solve for x:

x = 45
User avatar
G
JeffTargetTestPrep
Target Test Prep Representative
Joined: 04 Mar 2011
Status:Head GMAT Instructor
Affiliations: Target Test Prep
Posts: 2796
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  10 Jun 2017, 07:15
Expert Reply
Bunuel wrote:

The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176- 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ?

(A) 40
(B) 45
(C) 50
(D) 55
(E) 60


We are given that the maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R = 176 - 0.8x.

We need to determine the age of a person whose maximum recommended pulse rate when exercising is 140.

140 = 176 - 0.8x

0.8x = 36

x = 36/0.8 = 45

Answer: B
_________________

★ ★ ★ ★ ★   250 REVIEWS

5-STAR RATED ONLINE GMAT QUANT SELF STUDY COURSE

NOW WITH GMAT VERBAL (BETA)

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

Signature Read More
avatar
B
nzil
Intern
Intern
Joined: 09 Jul 2018
Posts: 12
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  22 Sep 2019, 16:38
140 = 176 - 0.8x ----->0.8x = (176-140)------->8x = 360(multiply by 10 on each side) ------> x=45.
User avatar
bumpbot
Non-Human User
Joined: 09 Sep 2013
Posts: 16549
Re: The maximum recommended pulse rate R, when exercising, for a [#permalink] New post  22 Oct 2020, 01:18
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources
Signature Read More
GMAT Club Bot
gmatclubot
[#permalink]
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
chetan2u
Math Expert
9102 posts
Bunuel
Math Expert
68703 posts
VeritasKarishma
Veritas Prep GMAT Instructor
11239 posts
yashikaaggarwal
Senior Moderator - Masters Forum
2292 posts
generis
Senior SC Moderator
4313 posts
Feedback

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions