March 2019 1 40 Report
Rata rata tinggi siswa wanita 135 cm dan rata rata tinggi siswa pria 138 cm. Jika banyak siswa 30 orang dan rata rata tinggi adalah 137 cm, maka banyak siswa wanita adalah....... orang.

A. 24
B. 20
C. 16
D. 10

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