tolong kak pake caranya

b.
0,5+1/3×25%
5/10 +1/3×25/100
5/10 +1/12
5/60 + 1/60
6/60=1/6

c.
0,5 +1/3 : 25%
5/10 + 1/3 : 25/100
5/10 + 1/3 × 100/25
5/10 + 4/3
5/30 + 4/30
9/30= 3/10

maaf kalau salah