Stations X and Y are connected by two separate, straight, parallel rail lines that are 250 miles long. Train P and train Q simultaneously left Station X and Y, respectively, and each train traveled to the other's point of departure. The two trains passed each other after traveling for 2 hours. When the two trains passed, which train was nearer to its destination?
1. At the time when the two trains passed, train P had averaged a speed of 70MPH.
2. Train Q averaged a speed of 55 miles per hour for the entire trip.
The OA is A, but I get E. [spoiler]In 1, we don't know how fast train Q was going. In 2, we don't know how fast train P was going. And combined we don't know if train Q continued it's rate or not.[/spoiler] What is wrong with my reasoning?
Thanks
1. At the time when the two trains passed, train P had averaged a speed of 70MPH.
2. Train Q averaged a speed of 55 miles per hour for the entire trip.
The OA is A, but I get E. [spoiler]In 1, we don't know how fast train Q was going. In 2, we don't know how fast train P was going. And combined we don't know if train Q continued it's rate or not.[/spoiler] What is wrong with my reasoning?
Thanks
A useful website I found that has every quant OG video explanation:
https://www.beatthegmat.com/useful-websi ... tml#475231
https://www.beatthegmat.com/useful-websi ... tml#475231
