1/2:0,6:25%= 0,8:3/4:60=

a. 1/2 : 6/10 : 25/100
= 1/2×10/6×100/25
= 20/6 = 3 2/6
b. 8/10 : 3/4 :60
= 8/10×4/3×1/60
= 4/225

semoga membantu :)
maaf kalo salahh ..