This math topic focuses on calculating time when distance and speed are known using different units of measure such as meters per hour, meters per minute, centimeters per hour, meters per second, and centimeters per day. The problems involve basic time, speed, and distance calculations, requiring students to manipulate these concepts in various scenarios involving bugs, bacteria, and a horse, emphasizing practical application and unit conversion skills in context.
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A bacteria moves at 2mm/hr and goes 10mm. How many hr does it take?