This math topic focuses on comparing the time taken by different entities (like horses, bacteria, and bugs) to travel respective distances at given speeds, where the challenge is heightened by variations in the units of speed and distance (e.g., meters per second vs. millimeters per second, meters vs. millimeters). Each problem requires the learner to determine which entity achieves its goal in less time, thus applying concepts of speed, distance, and time conversions to solve real-world type scenarios in an advanced context.
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Bacteria A moves at 1cm/hr and goes 40cm. Bacteria B moves at 10mm/hr and goes 500mm. Which takes less time?