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Verified answer
Waktu = 11 : 00 - 08 : 30 = 02 : 30 = 2½ jamJarak = 100 km
Kecepatan :
K = J ÷ W
K = 100 km ÷ 2½ jam
K = 100 km ÷ 5/2 jam
K = 100 km × 2/5 jam
K = 200/5 km/jam
K = 40 km/jam
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