The snow plow
Snow begins falling at a constant rate at some moment before noon. A plow that clears a constant volume of snow per minute starts at noon; it covers 2 miles in the first hour and 3 miles in the second. How many minutes before noon did it start snowing? (nearest minute)
Show hints (2)+
- Distance is the integral of speed, which is inversely proportional to snow depth.
- Take the ratio of the two hour-equations to eliminate the constant.
Answer
Reveal answer →Final answer
37 (± 2)
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