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Banyak cat = (50x60)/ 15 = 200 ml
banyak pencampur = 200 /1,5 = 133,33 ml
2)
sisa = 1 - 1/3 - 2/9 = 4/9 bagian = 40 ml
cat yang dibeli = 9/4 x 40 ml = 90 ml
3)
Harga Kertas= 25.000
harga pensil = 2x harga kertas = 2x 25.000 = 50.000
Harga cat = 5 x harga pensil = 5 x 50.000 = 250.000
Jumlah uang yang diperlukan untuk membeli
5 kertas + 2 pensil + 6 cat adalah
= 5x25.000 + 2x50.000 + 6x 250.000
= 125.000 + 100.000 + 1.500.000
= 1725.000