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anton : Boni = 2 : 3
Boni : Dono = 4 : 5
jumlah kelereng anton dan dono = 46
dit = selisih kelereng Boni dan Dono.
jwab=
Anton : Boni : Dono = 8 : 12 : 15
maka, selisih kelereng Boni dan Dono adalah 6.