David boards an elevator on the 11th level of a skyscraper and speeds up to 57 floors per minute. Albert, on the other hand, boards an elevator on the 51st level of the same building and descends at a speed of 63 floors per minute. Which floor will their paths intersect if they continue to move at this rate?
A. 19
B. 28
C. 30
D. 37
Answer:C
David boards an elevator on the 11th level of a skyscraper and speeds up to 57 floors per minute. Albert, on the other hand, boards an elevator on the 51st level of the same building and descends at a speed of 63 floors per minute. Which floor will their paths intersect if they continue to move at this rate?
A. 19 B. 28 C. 30 D. 37