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B : A = 2 : 3
B + A = 70
xB + xA = 70
2x + 3x = 70
5x = 70
x = 14
Kelereng bimo = 2(14)
= 28
Kelereng adi = 3(14)
= 42
b+a=70
jml b= 2×70
5
=28
jml a=3×70
5
=42
selisih=42-28
=14
jadi selisih kelereng bimo dan adi adalah 14