BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

The maximum recommended pulse rate R when exercising, for a person who is x years of age is given by the equation...

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2505
Joined: Sun Oct 15, 2017 1:50 pm
Followed by:6 members

The maximum recommended pulse rate R when exercising, for a person who is x years of age is given by the equation...

by BTGmoderatorLU » Tue Dec 01, 2020 4:55 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Source: Official Guide

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 OA is B
Top
Source: — Problem Solving |

GMAT/MBA Expert

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

Re: The maximum recommended pulse rate R when exercising, for a person who is x years of age is given by the equation...

by Brent@GMATPrepNow » Tue Dec 01, 2020 6:54 am
BTGmoderatorLU wrote: ↑
Tue Dec 01, 2020 4:55 am
 Source: Official Guide

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 OA is B
Given: Max pulse rate = 176 - 0.8x

So, if Max pulse rate = 140, we get: 140 = 176 - 0.8x
Subtract 176 from both sides of the equation to get: -36 = -0.8x
Solve: x = -36/(-0.8) = 45

Answer: B

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Post new topic Post Reply
• Page 1 of 1