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Waktu berangkat : 06.30
waktu sampai : 07.00
jarak = 3 km
Dit:
v = ...?
Jawab:
Waktu tempuh:
07.00-06.30 = 30 menit = 0,5 jam
KEcepatan minimum:
v = s/t = 3/0,5 = 6 km/jam
5. Diket:
s = 90 km
t = 1 jam 12 menit = 1 12/60
= 1 1/5 jam = 6/5 jam
t = 32 menit = 32/60 jam = 8/15 jam
Dit : s = ....?
Penyelesaian:
v1 = v2
s1/t1 = s2/t2
90/6/5 = s2/8/15
(kali silang)
90.8/15 = 6/5.s2
48 = 6/5 s2
s2 = 48.5/6
= 40 km
JAdi jarak tempuhnya adalah 40 km