beserta caranya jg yya..
Jawaban:
[tex](5 \times 8) + (6 \times 10) + (7 \times 9) + (8 \times 15) + (9 \times 8) = \\ 40 + 60 + 63 + 120 + 72 = 355 \\ 355 \div (8 + 10 + 9 + 15 + 8) = \\ 355 \div 50 = 7.1[/tex]
jawabannya b. 7.1
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