Student: Steve gets on the elevator at the 11th floor of a building and rides up at a rate of 57 floors per minute. At the same time Joyce gets on an elevator on the 51st floor of the same building and rides down at a rate of 63 floors per minute. If they continue traveling at these rates, at which floor will their paths cross?\nOptions:\n(A) 19\n(B) 28\n(C) 30\n(D) 32\n(E) 44.
Another student: Let's say, hmmm...

User
Using Speed Formula: Speed = Distance / Time\nDistance to be covered = 51-11 = 40\nSpeed of approach = 57 + 63 floors/min\nTime = 40/120 = 1/3\nSo Steve will cover 57x 1/3 floors in that time = 19\nSo he will be in 19 + 11 floor = 30th Floor Final answer: (C).
Assistant