The elevation of Lake Ontario is 75.00 m and the elevation of Lake Erie is 174.28 m. A ship travels between the two lakes, passing through the locks of the Welland Canal. If the ship takes 8 hours to travel between the lakes, the average (mean) change in elevation per hour is
(A) 12.41 m (B) 21.79 m (C) 5.25 m (D) 4.14 m (E) 7.80 m
Want a route through all this instead of an archive? The track
puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.
Source: CEMC, University of Waterloo,
licensed CC-BY-NC-4.0.
Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.