November 2018 1 113 Report
Dalam suatu kelas nilai rata-rata ulangan matematika 18 orang siswa putri 72.Sedangkan nilai rata-rata siswa putra 69.Jika Jumlah siswa di kelas tersebut 30, maka nilai rata-rata ulangan matematika di kelas adalah

A.68,2
B.70,8
C.71,2
D.73,2
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