User contributions
- 18:02, 20 December 2011 (diff | hist) . . (+441) . . N 1961 AHSME Problems/Problem 37 (Created page with "In racing over a given distance <math>d</math> at uniform speed, <math>A</math> can beat <math>B</math> by 20 yards, <math>B</math> can beat <math>C</math> by 10 yards, and <math...")
