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jarak=kec*waktu
40km/jam*2 1/3jam
40*7/3=13,3*7=…………
3) waktu=jarak÷kec
40÷60=2/3jam=40mnt
4) waktu=9.55-8.40=1jam 15mnt= 5/4jam
jarak=40*5/4=50km
5) waktu= 4/12=1/3 jam=20 mnt
brangkt pukul=07.00-00.20=06.40