Question

Tlng no 5 Serra caranya

Answer 1

Perbandingan berbalik nilai

54 sapi × 21 hari = (54-12) sapi × a hari
54 × 21 = 42 × a
18 × 7 = 14 × a/3
18 = 2 × a/3
9 = a / 3
a = 9 × 3 = 27 hari

Answer 2

Gak tau deh....... maaf ya........