September 2018 1 40 Report
Dalam suatu kelas nilai rata rata ulangan matematika 18 orang siswa putri 72, sedangkan nilai rata rata siswa putra 69. jika jumlah siswa dikelas tersebut 30, maka rata rata ulangan matematika di kelas tersebut......
a. 68.2
b. 70.8
c. 71.2
d. 73.2

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