tolong dijawab ya ,gk ush pakai cara

1) persen = 12%
pec biasa = 12% = 12/100 = 3/25
desimal = 12/100 = 0,12

2) persen = 2/5 × 100% = 40%
desimal = 2/5 × 2/2 = 4/10 = 0,4

3) desimal = 0,46
pec biasa = 46/100 = 23/50
persen = 46/100 = 46%

4) pec biasa = 7/8
persen = 7/8 × 100% = 87,5%
desimal = 87,5% = 87,5/100 = 0,875

5) desimal = 13,6
pec biasa = 136/10 = 68/5
persen = 13,6 × 100% = 136/10 × 100% = 1360%