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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

01 Jun 2013, 02:43

1

This post received KUDOS

1

This post was BOOKMARKED

If Danielle ran a race at a constant speed, at what time did she finish?

(1) Danielle started the race at 8:00 a.m. No info about the speed, or time. Not sufficient

(2) At 9:30 a.m. Danielle was halfway through the race, and at 10:00 a.m., she was 2/3 of the way through the race. This means that in 30 minutes (10:00-9:30) she runs \(\frac{2}{3}-\frac{1}{2}=\frac{1}{6}\) of the race. At 10:00 she has \(\frac{1}{3}\) left to run or \(\frac{2}{6}\) and, according to the upper calculus, she will run it in \(1\) hour (1/6 every 30 minutes). She will finish at 11:00 am. Sufficient B _________________

It is beyond a doubt that all our knowledge that begins with experience.

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

22 Jun 2013, 10:49

solved in 32 secs. exactly the approach by zarrolou. between 9.30 and 10 she covers 2/3 -1/2 part of the journey. Therefore we can calculate the time required to travel 1/2 of the distance and adding this time to 9.30 we get the time of finish.

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

30 Jul 2013, 13:55

If Danielle ran a race at a constant speed, at what time did she finish?

(1) Danielle started the race at 8:00 a.m. This tells us nothing about when she finished, how far she ran, rate, etc. INSUFFICIENT

(2) At 9:30 a.m. Danielle was halfway through the race, and at 10:00 a.m., she was 2/3 of the way through the race. Lets say she ran 10 miles. In 1.5 hours she ran 5/10 miles. in 2.0 hours she ran roughly 6.67 miles.

Every half hour she ran (5/10) / (1/3) miles: 1.67miles. If she ran at a constant speed, that means she finished the race by 11 A.M. It's not the distance that is important but rather, the rate she runs at. If her rate is constant and she finishes the intervals at the same time, the distance she covers is irrelevant. SUFFICIENT

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

10 Feb 2015, 15:18

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

03 Apr 2015, 08:16

only B is enough . at 9.30 he had completed half race , and at 10 he had compelted 2/3 rd race so within half hour he compelted (1/2-2/3)th race. since speed is constant . Its possible to calcuate when race will over. (no need to calculate though)
_________________

Re: If Danielle ran a race at a constant speed, at what time did [#permalink]

Show Tags

13 Oct 2016, 07:21

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

After days of waiting, sharing the tension with other applicants in forums, coming up with different theories about invites patterns, and, overall, refreshing my inbox every five minutes to...

I was totally freaking out. Apparently, most of the HBS invites were already sent and I didn’t get one. However, there are still some to come out on...

In early 2012, when I was working as a biomedical researcher at the National Institutes of Health , I decided that I wanted to get an MBA and make the...