<p>This is the question:</p>
<p>Sharon is on a train that is traveling at a constant speed. Consecutively numbered markers are located along the track at 66 meter intervals. Exactly 3 minutes after she passes marker number 1, she passes marker number n+1. In terms on n, what is the speed of the train, in meters per minute?</p>
<p>A. 198/n
B. 198/(n+1)
C. 22n
D. 22(n+1)
E. 66(n+1)</p>
<p>Correct Answer: C</p>
<p>Ok, well this is what I did. I first found the distance the train travels in terms of n: 66n. Then I found the time in minutes that the train would travel, which is 3n. Then you get 66n/3n or just 22. </p>
<p>I don't understand, however, how 22n is the answer. The question says that the train travels at a constant speed; conversely, with a speed of 22n, the speed would increase as its distance increases.</p>
<p>If someone could guide me in the right direction I'd really appreciate it!</p>
<p>THANKS,
Robbie</p>