Last visit was: 21 Nov 2024, 02:58 It is currently 21 Nov 2024, 02:58

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.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 29997
Own Kudos [?]: 36321 [0]
Given Kudos: 25922
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 29997
Own Kudos [?]: 36321 [0]
Given Kudos: 25922
Send PM
User avatar
Senior Manager
Senior Manager
Joined: 10 Feb 2020
Posts: 496
Own Kudos [?]: 348 [0]
Given Kudos: 299
Send PM
Intern
Intern
Joined: 09 Dec 2018
Posts: 41
Own Kudos [?]: 34 [0]
Given Kudos: 29
Send PM
Re: Davis travels at a constant speed of 40 miles per hour for t [#permalink]
You have to divide by the total time. 140/3 = 49.

Posted from my mobile device Image
User avatar
Senior Manager
Senior Manager
Joined: 10 Feb 2020
Posts: 496
Own Kudos [?]: 348 [0]
Given Kudos: 299
Send PM
Re: Davis travels at a constant speed of 40 miles per hour for t [#permalink]
Chakolate wrote:
You have to divide by the total time. 140/3 = 49.

Posted from my mobile device Image


Oh I was taking average. Thanks for correcting me
Manager
Manager
Joined: 25 Jul 2020
Posts: 75
Own Kudos [?]: 74 [0]
Given Kudos: 1
Send PM
Re: Davis travels at a constant speed of 40 miles per hour for t [#permalink]
Carcass wrote:
Davis travels at a constant speed of 40 miles per hour for two hours and then at a constant speed of 60 miles per hour for one hour.


Quantity A
Quantity B
Davis's average speed for the entire trip
45 miles per hour



A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.


The formula for average speed is total distance divided by total time (NOT taking the average of the two speeds!). We can use the formula s = d/t to find that the distances are 80 and 60. Average speed = (80+60)/3 = 46.667 mph. Therefore Quantity A > Quantity B.
Prep Club for GRE Bot
Re: Davis travels at a constant speed of 40 miles per hour for t [#permalink]
Moderators:
GRE Instructor
83 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

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