Soal SMP · Penerapan · Kesulitan 3/5
A train travels from Town A to Town B at an average speed of 80 km/h. It then returns from Town B to Town A at an average speed of 60 km/h. If the total travel time for the round trip is 7 hours, what is the distance between the two towns?
- A.240 km
- B.280 km
- C.300 km
- D.320 km
Kunci jawaban & pembahasan
Jawaban: 240 km
Let distance = d. Time going = d/80, time returning = d/60. Total time = d/80 + d/60 = (3d+4d)/240 = 7d/240 = 7, so d=240 km.
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