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23 Dec 2013, 07:03
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Difficulty:
5%
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Question Stats:
91% (01:06) correct
9%
(01:14)
wrong
based on 2330
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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
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
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!
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!
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23 Dec 2013, 07:04
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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.
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.
JusTLucK04
23 Dec 2013, 12:31
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Bookmarks
What are we testing here..my multiplication skills?..
