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jarak sebenarnya = 4 x 1.750.000
= 7.000.000 cm
= 70 km
waktu tempuh tanpa istirahat= s/v
= 70/80
= 7/8 jam
waktu dgn istirahat = 7/8+1/2
= 11/8 jam
= 1 3/8 jam
= 1 jam 22,5 men it
shgga waktu Tiba= 6.15 + 1 jam 22,5 menit
= 7.37 lebih setengah menit