A car travels from City A to City B at an average speed of 60 km/h and returns at 80 km/h. The total travel time is 7 hours. What is the distance between the two cities?
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- Time needed to complete \(\frac{14}{15}\) at combined rate: \(\frac{14/15}{3/20} = \frac{14}{15} \times \frac{20}{3} = \frac{280}{45} = \frac{56}{9} \approx 6.22\) hours
- Total time: \(1 + \frac{56}{9} = \frac{65}{9} \approx 7.22\) hours
- #### \(\frac{65}{9}\) hours (approximately 7.22 hours)
- Let distance = \(d\) km
- Time from A to B: \(\frac{d}{60}\) hours
- Time from B to A: \(\frac{d}{80}\) hours
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