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bentuk perbandinga terbalik
y = k/x
xy = k
soal diatas
y/2 = 8/x
xy = 8(2)
xy = 16
jadi persamaan diatas adalah perbandingan terbalik, dan pernyataan Andre salah
No. 4
T₁ = pa Fatur + 9 tukang = 10 tukang
w₁ = sebulan = 30 hari
rumus perbandingan terbalik
T₂/T₁ = W₁/W₂
T₂/10 = 30/25
T₂ = 30(10)/25
T₂ = 300/25
T₂ = 12 tukang