Jawabanmu

2014-02-24T06:02:42+07:00
A : B ...... = 3 : 4
..... B : C  =..... 2 : 5

A : B : C = 6 : 8 : 20 = 34

A = 6/34 x 102 =18
B = 8/34 x 102 = 24
C = 20/34 x 102 = 60

A + B + C
18 + 24 + 60 = 102
2014-02-24T06:11:22+07:00
Kelereng a=18
kelereng b=24
kelereng c=60