September 2018 2 689 Report
Sepuluh orang wanita mempunyai rata-rata tinggi badan 160 cm, sedangkan 20 pria rata-rata tingginya 170 cm. tinggi badan rata-rata ketiga puluh orang tersebut adalah...

a. 16dm
b. 16 1/4 dm
c. 16 1/2 dm
d. 16 2/3 dm

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