Speed Distance Time

[chirag.trivedi]

Hi

Here is a sped distance time problem.Unfortunately I dont have the OA but hopefully some experts can help here

John and Mary drive westward from a point.Mary goes first with a speed of 50 mph and passes a gas station on her way.John starts after some time ,goes at a speed of 60 mph and passes the gas station after 15 minutes.How long will it take before John passes Mary .Both John and Mary spend atmost 2 hours on the highway

The source is GMAT Prep software

[RonPurewal]

Hi,

* If this problem is from the GMAT Prep software, then you should have the official answer. There are answers (and, now, explanations) to every problem in that software.
If you saw this problem on GMAT Prep, please post the OA. Thanks.

* Please copy the problem exactly as given in the original source.
As currently posted, this problem is most certainly not written in the style of the official GMAT. (GMAC would never write informal language like "goes at a speed of...")

* Finally, please ask a specific question about the problem.
What do you already understand? What don't you understand? Etc.
If there's no specific question, then the best possible response is "Check out the answer key".

Thanks.