mohon bantuannya no.12 dan 13 terimakasii:)

12. m:b = 5 : 7
b:p = 2:3
m : b : p = 10 : 14 : 21
p - m = (21-10)/(10+14+21) x 360 = 11/45 x 360 = 88

13. h : z = 2 : 3
z : f = 6 : 4 = 3 : 2
( h = f ) : z = 6 : 9
h = f = 26

no.12= merah= 360/15×5=1800:15=120
biru= 360/15×7=2520:15=168
putih=360/15×3=1080:15=72
no13= d.56