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Waktu = 07.00 - ......
Jarak = 90 km
kecepatan = 10 m/s
jawab :
90 km = 90 × 1000 = 90.000 m
90.000 m ÷ 10 m = 9.000 s
9.000 s = 150 menit = 2.30 + 07.00 = 09.30