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Dit :
Jwb :
t1=1 jam
t2=45 menit=3/4 jam
t3=1jam 15 menit=5/4
v rata rata= S
t1+t2+t3
= 160km
1+3/4+5/4 jam
= 160
3
=53,3 km/jam
ket: t=waktu tempuh(jam)
v=kecepatan(km/jam)