Respuesta :

5 hours. 15 miles divided by ( 3 x 1 ) = 5. Since you only get 3 kilometers per hours, you divide it, or you can do cross multiply :).

Answer:

5

Step-by-step explanation:

i think it's 5 if you do 15 divided by 3 = 5 and if u count the km and hours it goes to 5

3 km 1 hr

6 km 2 hr

9 km 3 hr

12 km 4 hr

15 km 5 hr

hope this helps <33