GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 16 Oct 2019, 00:27

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.

Close

Request Expert Reply

Confirm Cancel

The maximum recommended pulse rate R, when exercising, for a

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58369
The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 23 Dec 2013, 07:03
1
10
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

89% (01:03) correct 11% (01:14) wrong based on 1093 sessions

HideShow 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!

_________________
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58369
Re: The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 23 Dec 2013, 07:04
1
Senior Manager
Senior Manager
avatar
B
Joined: 17 Sep 2013
Posts: 322
Concentration: Strategy, General Management
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]

Show Tags

New post 23 Dec 2013, 12:31
What are we testing here..my multiplication skills?..:(
_________________
Appreciate the efforts...KUDOS for all
Don't let an extra chromosome get you down..:P
Intern
Intern
User avatar
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]

Show Tags

New post 23 Dec 2013, 17:30
45...is this really a 600 level problem?
Manager
Manager
User avatar
Status: GMATting
Joined: 21 Mar 2011
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]

Show Tags

New post 23 Dec 2013, 21:40
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
Manager
Manager
avatar
Joined: 04 Oct 2013
Posts: 150
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]

Show Tags

New post 24 Dec 2013, 02:53
2
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)
Current Student
avatar
B
Joined: 11 Feb 2017
Posts: 7
Location: India
GMAT 1: 710 Q49 V38
GPA: 3.71
Re: The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 12 Feb 2017, 04:44
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.
Current Student
avatar
B
Joined: 09 Nov 2016
Posts: 10
GMAT 1: 710 Q47 V40
Re: The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 07 Jun 2017, 21:10
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
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2817
Re: The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 10 Jun 2017, 08:15
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
_________________

Jeffrey Miller

Head of GMAT Instruction

Jeff@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

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

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Intern
Intern
avatar
B
Joined: 09 Jul 2018
Posts: 12
Re: The maximum recommended pulse rate R, when exercising, for a  [#permalink]

Show Tags

New post 22 Sep 2019, 17:38
140 = 176 - 0.8x ----->0.8x = (176-140)------->8x = 360(multiply by 10 on each side) ------> x=45.
GMAT Club Bot
Re: The maximum recommended pulse rate R, when exercising, for a   [#permalink] 22 Sep 2019, 17:38
Display posts from previous: Sort by

The maximum recommended pulse rate R, when exercising, for a

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





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