bantu jwb ya kaka felis untuk bljr

1) 24/6 = 36/x
4 = 36/x
x = 36/4 = 9 kg
Biaya = 9 × 7.000 = Rp63.000

2) Buku tulis = x
5x = 11000
x = 11000/5 = Rp2.200
2 lusin = 24 × 2.200 = Rp52.800

3) x/80 = 5/72
x = 80×5/72 = 5,5 jam