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rata2 = 9/6 = 1,5 menit
insya allah begitu
t₁ : 2 menit
t₂ : 2 menit
t₃ : 1 menit
s₁ : 1 km
s₂ : 3 km
s₃ : 2 km
ditanya = ∨ rata rata
jawab =
∨ rata rata : s₁ + s₂ + s₃ per t₁ + t₂ + t₃
: 1 km + 3 km + 2 km per 2 menit + 2 menit + 1 menit
: 6 km per 5 menit
: 1,2 km/menit
ket :
∨ = kelajuan/kecepatan
t = waktu
s = jarak
semoga benar..... :)