Jawab ya pake caranya plss

[tex] \frac{20}{100} \times 4000 = 800[/tex]
[tex] \frac{45}{100} \times 20000 = 9000[/tex]
[tex] \frac{75}{100} \times 60 = \frac{15}{20} \times 60 = 45[/tex]

20% = 20/100
20/100 × 4.000 = Rp. 800
Rp 4.000, 00 - 800 = Rp 3200
45% = 45/100
45/100 × 20.000 = 900
Rp 20.000 - 900 = Rp 19.100
75% = 75/100
75/100 × 60 = 450/10 = 45
60-45 = 15 buah