September 2018 2 76 Report
Nilai rata-rata ulangan Matematika 15 siswa adalah 7,0. Jika nilai ulangan Matematika Andri dimasukkan dalam kelompok tersebut, nilai rata-ratanya menjadi 7,125. Nilai ulangan Andri adalah....
a. 7
b. 7,125
c. 8
d. 9

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