Last visit was: 29 May 2025, 16:23 It is currently 29 May 2025, 16:23
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

GRE Prep 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 GRE 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

Shaundra drove the same route to work each morning, Monday through...

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

avatar
B
thelastzedi
Intern
Intern
Joined: 29 Mar 2023
Posts: 14
Own Kudos [?]: 3 [0]
Given Kudos: 0
Send PM
Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   Updated on: 29 Apr 2023, 10:15
00:00

Question Stats:

36% (01:46) correct 63% (01:15) wrong based on 36 sessions

Hide Show timer Statistics

Shaundra drove the same route to work each morning, Monday through Friday, in a particular week. On Monday and Tuesday she averaged 20 miles per hour, and on her three remaining work days she averaged 30 miles per hour.

Quantity A
Quantity B
Shaundra’s average speed for all five morning commutes
26 miles per hour


A Quantity A is greater.
B Quantity B is greater.
C The two quantities are equal.
D The relationship cannot be determined from the information given.
ShowHide Answer
Official Answer
B

Originally posted by thelastzedi on 29 Apr 2023, 09:10.
Last edited by Carcass on 29 Apr 2023, 10:15, edited 1 time in total.
Fixed
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 32158
Own Kudos [?]: 38306 [0]
Given Kudos: 26314
Send PM
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   29 Apr 2023, 10:17
Expert Reply
Please follow the rules for posting https://gre.myprepclub.com/forum/rules- ... -1083.html

This is a QCQ NOT a problem solving. Please post under the right sub-forum. which is this

Thank you
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 32158
Own Kudos [?]: 38306 [1]
Given Kudos: 26314
Send PM
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   29 Apr 2023, 10:38
1
Expert Reply
You here cannot use the weighted average because you do not have the speed of the two distances. You do not know if she drove fast o slowly the first two days or the other three days

You have only the miles for 5 days

2d/20+3d/30=2d/10=d/5

5d/d/5=25d/d=25

B is bigger
avatar
B
thelastzedi
Intern
Intern
Joined: 29 Mar 2023
Posts: 14
Own Kudos [?]: 3 [1]
Given Kudos: 0
Send PM
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   30 Apr 2023, 12:11
1
Carcass wrote:
You here cannot use the weighted average because you do not have the speed of the two distances. You do not know if she drove fast o slowly the first two days or the other three days

You have only the miles for 5 days

2d/20+3d/30=2d/10=d/5

5d/d/5=25d/d=25

B is bigger



yes,
i have tried this way as well. i got this ans.
by the way "you do not have the speed of the two distances"
actually we have given
for mon & tues - 20miles/H
remaining 3 days - 30 miles/H
User avatar
B
Jakelong
Intern
Intern
Joined: 10 Jul 2023
Posts: 12
Own Kudos [?]: 8 [1]
Given Kudos: 29
Send PM
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   31 Aug 2023, 18:37
1
can we use the formula 2*S1*S2/S1+S2, THE FORMULA THAT IS USED WHILE THE DISTANCE IS SAME
BASED ON WHICH I GOT 2*30*20/20+30 = 1200/50 = 24
24<26
SO B IS GREATER
avatar
B
jiayou111
Manager
Manager
Joined: 05 Sep 2023
Posts: 63
Own Kudos [?]: 68 [3]
Given Kudos: 11
Send PM
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink] New post   05 Sep 2023, 14:53
3
There is no specified distance, so if you make up a random distance (I chose 60 miles), you can solve the problem this way. If the route to work is 60 miles, the average speed for Monday and Tuesday would be d/t = r or 2(60)/t = 20. Therefore for Monday and Tuesday, the time would be 6 hours.

It's the same for Weds, Thurs and Friday. Using d/t = r, it would be 3(60)/t = 30. Therefore time would also be 6 hours.

For the last part, the total distance 60(5) divided by the total time 12 hrs = 300/12 or 25 miles per hour.

25 < 26 meaning Choice B is the correct answer.
Prep Club for GRE Bot
gmatclubot
Re: Shaundra drove the same route to work each morning, Monday through... [#permalink]
05 Sep 2023, 14:53
Moderators:
adewale223
GRE Instructor
111 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1131 posts
VibhuAnurag
GRE Instructor
234 posts

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

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact