3 kodi : 4 lusin = ..... a. 5 : 4 b. 4 : 5 c. 3 : 2 d. 2 : 3

3 kodi : 4 lusin
= 3 (20) : 4 (12)
= 60 : 48
= 5 : 4 (A)

1 kodi = 20
1 lusin = 12
3x(20):4×(12)
=60:48
=60÷(12) = 5
=48÷(12) = 4
jadi jawabannya yang =
a.)5:4