Use units to guide multi-step problem solving and choose/interpret units, scales, and graph origins.
Convert a rate to new numerator and denominator units
Problem
Convert \(60~\text{miles}~\text{per}~\text{hour}\) to feet per second.
Big Picture
What this problem is really about
Convert the numerator and denominator as separate unit-cancellation tasks, using factors equal to one. Arrange each factor so the old distance and time units disappear while the requested units remain in their proper positions; the resulting compound unit is a built-in check on the setup before any arithmetic.
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