tolong kerjakan no 14-16 pakai cara

15. ayam betina : a
ayam jantan : b
itik jantan : c -> 75.000

5a = 4b
3b = 4c

3b = 4 x 75rb
3b = 300.000
b = 100.000

5a = 4 x 100.000
5a = 400.000
a = 80.000

Harga dua ekor ayam betina = 160.000

17. 20 hg = 2 kg
40 g = 0,04 kg

Berat 1 minyak goreng = 2,04 kg
7 x 2,04 kg = 14,28kg