9514 1404 393
Answer:
D. (900 mi)/(? hours)
Step-by-step explanation:
The given fraction has miles in the numerator and hours in the denominator. To write a proportion, you need to equate that to a fraction that has miles in the numerator and hours in the denominator. The (miles, hours) pair of interest is (900 miles, ? hours), so the necessary proportion is ...
[tex]\dfrac{30\text{ miles}}{1\text{ hour}}=\boxed{\dfrac{900\text{ miles}}{\text{? hours}}}[/tex]
