A cyclist starts a race at a steady speed of 12 miles per hour, decreasing their speed by 2 miles per hour every 45 minutes. How far has the cyclist gone after exactly 3 hours?
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thanks!
Great!
Wait, does the speed drop at the 45 min mark or after a full hour? I keep second-guessing myself on the timing here.
it says every 45 minutes so it changes at 45, 90, 135 min etc
ah got it, i was reading it as hourly. thanks!
Easy question but i almost picked 30 by just doing 12x3 lol. good reminder to actually read the decreasing speed part
What it tests
Your application of distance = rate × time to trains, boats, and commuters, including relative speed.
Common trap
Mixing units (miles per hour vs. minutes) or averaging speeds — average speed is total distance over total time.