Jawabanmu

2014-04-20T09:42:19+07:00
A : B = 60 : 40
        = 3 : 2
Jawaban paling cerdas!
2014-04-20T09:47:16+07:00
FA= n/t = 60/60 = 1 Hz
fB= n/t = 40/60 = 2/3 Hz

Perbandingan
1 : 2/3 = 3 : 2