Respuesta :
Answer:
C 900 miles
Step-by-step explanation:
Since its traveling 600 miles per hour that would be equal to 300 miles per 30 minutes (half hour) and 600+300=900 making it C.
900 if it traveled 600 per hour and 90 mins is 1 hour and 30 mins then we already know that he traveled more than 600 and now we already know that 30 is half of an hour so we also do that to 600 and get 300 so 600+300 is 900