This math topic covers advanced problems relating to speed, distance, and time calculations. It involves determining the time taken for a certain distance to be covered at given speeds, with complexities like different unit conversions (e.g., seconds to minutes, hours to minutes, etc.). The problems focus on practical scenarios using bugs, horses, and bacteria as subjects, requiring application of formulas to compute time from given speeds and distances. The questions offer multiple-choice answers, testing the ability to perform accurate calculations and unit conversions in the context of real-world scenarios.
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A bug crawls at 2cm/min and goes 8cm. How many hr does it take?