This math topic focuses on calculating the duration of return journeys using the concepts of speed, distance, and time. Students are required to deduce the time it takes for a car to return to its starting point under varying speeds, comparing it to a known outbound trip time and distance. It practices speed and distance conversions into time, important for solving real-world problems where time, speed, and distance parameters often vary. Each question offers multiple-choice answers, enhancing problem-solving skills and understanding of the relationships between these three fundamentals in physics and everyday calculations.
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A car drives for 1 hr to reach a town 120 km away and then returns. It's average speed is 120 km/hr. How long does the return journey take?