Question

Tolong bantu ya kakak kakak / mbak mbak cepetan

Answer 1

Rata-rata= fixi : n

Hitung dulu tiap data
25 x 4 = 100
30 x 3 = 90
35 x 2 = 70
40 x 5 = 200
45 x 6 = 270

Jumlah (fixi) : 100+90+70+200+270 = 730
Total banyak potongan (n): 4+3+2+5+6 =20

Rata-rata: 730 : 20 = 36,5 gram

Answer 2

25 x 4 = 100
30 x 3 = 90
35 x 2 = 70
40 x 5 = 200
45 x 6 = 270
------------------- +
      20 = 730
rata² berat potongan logam = 730 : 20 = 36,5 gram