Xgab = (XA . NA + XB. NB) / NA + NB
67,5 = (66 . 35+ XB . 40) / (35 + 40)
67,5 = 2310 + 40XB / 75
67,5 x 75 = 2310 + 40XB
5062,5 = 2310 + 40XB
40XB = 5062,5 - 2310
40XB = 2752,5
XB = 2752,5/40
XB = 68,8
Jadi rata rata kelas B 68,8
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Xgab = (XA . NA + XB. NB) / NA + NB
67,5 = (66 . 35+ XB . 40) / (35 + 40)
67,5 = 2310 + 40XB / 75
67,5 x 75 = 2310 + 40XB
5062,5 = 2310 + 40XB
40XB = 5062,5 - 2310
40XB = 2752,5
XB = 2752,5/40
XB = 68,8
Jadi rata rata kelas B 68,8