a runner's time in a one-mile race t, varies jointly directly as the number of hours of practice per week,...
kton22a runner's time in a one-mile race t, varies jointly directly as the number of hours of practice per week, p, and the runner's height h, and inversely as the runner's weight, w. A 72-inch tall runner weighing 175 pounds completes a one-mile race in 324 seconds after practicing 14 hours per week. how many hours per week should a 64-inch tall runner weighing 132 pounds spend practicing in order to complete a one-mile race in 300 seconds?
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