Answer:
D. [tex]\frac{30}{18}[/tex]
Step-by-step explanation:
Multiply the numerator of one ratio with the denominator of the other. If the products are equal, then the ratios are proportional.
A)
[tex]\frac{15}{12} =\frac{10}{6} \\15*6=12*10\\90\neq120[/tex]
∴ NOT proportional
B)
[tex]\frac{30}{9} =\frac{10}{6} \\30*6=9*10\\180\neq90[/tex]
∴ NOT proportional
C)
[tex]\frac{20}{9} =\frac{10}{6} \\20*6=9*10\\120\neq90[/tex]
∴ NOT proportional
D)
[tex]\frac{30}{18} =\frac{10}{6} \\30*6=18*10\\180=180[/tex]
∴ PROPORTIONAL
