This math topic focuses on unit conversions involving complex ratios. It primarily addresses how to correctly set up unit conversion problems given specific contexts, such as converting time units for a caterpillar's movement or converting speed units for an eagle's dive. The questions require converting measurements like yards to feet or minutes to seconds, applying multiplication or division by factors related to these unit rates. This not only tests a student's ability to manipulate fractions but also their understanding of dimensional analysis principles.
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Select the correct way to set up this unit conversion problem
A worm takes 6/7 minutes to move a foot. How long, in seconds, does it take to move a yard?