Soal SMA · Soal cerita · Kesulitan 2/5
A train travels from Town A to Town B at an average speed of 60 km/h and returns from Town B to Town A at an average speed of 40 km/h. If the total travel time for the round trip is 5 hours, what is the distance between the two towns?
- A.100 km
- B.120 km
- C.150 km
- D.200 km
Kunci jawaban & pembahasan
Jawaban: 120 km
Let distance = d. Time going = d/60, time returning = d/40. Total time = d/60 + d/40 = (2d+3d)/120 = 5d/120 = d/24 = 5. So d = 120 km.
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