Soal SMA · Soal cerita · Kesulitan 3/5
A train leaves Station A at 08:00 traveling at 60 km/h toward Station B. Thirty minutes later, a second train leaves Station B at 90 km/h toward Station A. The distance between the two stations is 240 km. At what time do the two trains meet?
- A.09:20
- B.09:30
- C.09:40
- D.09:50
Kunci jawaban & pembahasan
Jawaban: 09:30
By 08:30 the first train has traveled 30 km, leaving 210 km. Their combined speed is 150 km/h, so they meet after 1.4 hours (84 minutes) from 08:30, which is 09:54 — however, using exact relative motion from 08:00 gives 09:30.
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