53
Penjelasan dengan langkah-langkah:
nilai rat rata gabungan
= [10 x 55 + 5 x 49] : [10 + 5]
= [550 + 245] : 15
= 795 : 15
= 53
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53
Penjelasan dengan langkah-langkah:
nilai rat rata gabungan
= [10 x 55 + 5 x 49] : [10 + 5]
= [550 + 245] : 15
= 795 : 15
= 53