berapa rata rata berat badan tersebut

Penyelesaian :

(33 x 3) + (35 x 7) + (36 x 9) + (38 x 11) + (40 x 6) + (42 x 4)
= 99 + 245 + 324 + 418 + 240 + 168
= 1494

3 + 7 + 9 + 11 + 6 + 4
= 10 + 20 + 10
= 40

Rata-Rata berat badan
1494 : 40
= 37,35 kg

Semoga Membantu :)

33×3 = 99
35×7 = 245
36×9 = 324
38×11 = 418
40×6 = 240
42×4 = 168

Rata-rata :
Jumlah seluruh data / jumlah data
99+245+324+418+240+168
----------------------------------------
40
= 1494
-------
40
= 37,35

#maafjikasalah