Jawab:
3)D.13,75
4)B.57
Penjelasan dengan langkahnya:
3)12x4+13x2+14x3+15x1+17x2/(4+2+3+1+2)=
48+26+42+15+34/12=165/12=
=13,75 D
4)Berat rata-rata
= (52 x 3 + 54 x 2 + 55 x 2 + 60 x 3 + 65 x 2)/(3 + 2 + 2 + 3 + 2)
= (156 + 108 + 110 + 180 + 130)/12
= 684/12
= 57 kg B
Semoga membantu
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Jawab:
3)D.13,75
4)B.57
Penjelasan dengan langkahnya:
3)12x4+13x2+14x3+15x1+17x2/(4+2+3+1+2)=
48+26+42+15+34/12=165/12=
=13,75 D
4)Berat rata-rata
= (52 x 3 + 54 x 2 + 55 x 2 + 60 x 3 + 65 x 2)/(3 + 2 + 2 + 3 + 2)
= (156 + 108 + 110 + 180 + 130)/12
= 684/12
= 57 kg B
Semoga membantu