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9.
2 × 8/12,5 × 8 = 16/100 = 16%
0,37 = 37/100 = 37%
33%
1 × 12,5/8 × 12,5 = 12,5/100 = 12,5%
Urutannya = 1/8; 2/12,5; 33%; 0,37 (c)

10.
0,65 ÷ 3/5 × 30% = (65÷5/100÷5 = 13/20) ÷ 3/5 × (30÷10/100÷10 = 3/10) = 13/20 ÷ 3/5 × 3/10 = 13/20 × 5/3 × 3/10 = 195÷5/600÷5 = 39÷3/120÷3 = 13/40 (b)

11.
0,48 + (3×2/5×2 = 6/10 = 0,6) + (9×5/20×5 = 45/100 = 0,45) = 0,48 + 0,6 + 0,45 = 1,53《Tiga Kerbau
Berat kerbau keempat adalah = 1,89 - 1,53 = 0,36 ton (b)

12.
a. = 31×0,8/124×0,8 = 24,8/100 = 24,8
b. = 27×2,7/36×2,7 = 72,9/100 = 72,9
Nomor 12 itu setahu saya
MAAF KALO SALAH