Tolong jawab pertanyaan no 1

0,6 = 3/5
15% = 3/20
2 2/5 = 12/5

3/5 x 3/20 = 9/100
9/100 : 12/5 = 9/100 x 5/12 = 45/1200 = 9/240 = 3/80 jawabannya yang c.