This math topic focuses on calculating the duration of a return journey using given average speeds and distances. The problems involve a series of scenarios where a car travels to a town and back, requiring learners to use the distance-speed-time relationship to determine how long the return trip takes. Each query provides multiple-choice answers, enhancing problem-solving skills within the context of practical situations involving motion. The overall theme of these problems is embedded in an advanced unit on speed, distance, and time calculations.
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A car drives for 5 hrs to reach a town 75 km away and then returns. It's average speed is 25 km/hr. How long does the return journey take?