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

Redeem

Hard DS rate/distance/time

Expert replies
by arellalu » Sat Sep 01, 2012 12:07 pm
Dan drove from point A to point B at a constant speed, and then returned to A along the same route at a different constant speed. Did Dan travel from A to B at a speed greater than 40 miles per hour?

(1) Dan's average speed for the entire round trip, excluding the time spent at point B, was 80 miles per hour.

(2) It took Dan 20 more minutes to drive from A to B than to make the return trip.
Join the discussion
Source: — Data Sufficiency |

by GMATGuruNY » Sun Sep 02, 2012 12:11 am
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion