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2. Misal: bb = botol besar
bk = botol kecil
bb = 3/2 liter
bk = 3/5 liter
bb = 3/2 . 65 = 97,5 liter
bk = 3/5 . 48 = 28,8 liter
total tangki = bb + bk = 97,5 + 28,8 = 126,3 liter
3. Misal: x = beras
y = gula
z = telur
x = 1/2 . y
y = 3/4 . z
z = Rp. 8,000
y = 3/4 . 8000 = Rp. 6,000
x = 1/2 . 6,000 = Rp. 3,000 (harga beras 1 liter)
4. total beras = 40 kg
konsumsi tiap anak = 3/6 kg = 1/2 kg
jumlah anak = 4 orang
jumlah konsumsi total tiap hari = 1/2 . 4 = 2 kg
lama waktu habis total beras = total beras / jumlah total konsumsi tiap hari = 40/2 = 20 hari