II. Solve for the missing term in each proportion.
6. 6:__= 8:12
a 6
b 8
c. 9
d. 12
7 ___:7 = 6:21
a 2
b. 6
C 7
d 21
8.20 24=___:6
a 20
b 10
C 5
d 6
9.2:5=____:45
a 10
b 13
C 15
d. 18
10. 12:8=__:16
a 6
b. 10
C 14
d 24​