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10............
12.e.23 orang
presentase sapi = 100% - (30% + 10% + 20%) = 40%
banyaknya sapi = (40/100) x 2400 =960 ekor
10)
seluruh siswa berjumlah = (100/22,5) x 90 = 400 siswa
siswa yang mengambil office administrasi = 400 - (80 + 90 +110) = 120 siswa
presentase siswa yang mengambil office administrasi = (120/400) x 100% = 30%
12)
n = 40 - (13 + 10 + 8 + 1) = 8
jumlah siswa yang lulus= 10 + 8 + 1 = 19