1,300 miles ---- 50 miles ----- 275 mile per hour.
↓ --- 1 hour
1,300 - 275 = 1,025 <- 2 hour
1,025 - 275 = 750 <---- 3 hour
750 - 275 = 475 <---- 4 hour
475 - 275 = 200 <--- 5 hour
200 - 50 = 150 <---- 6 hour
150 - 50 = 50 <--- 7 hour
50 - 50 = 0 <----- 8 hour
ANSWER ---->>>>> 8 Hours
All i did was subtract 275 from 1,300 until i wasn't able to, then i switched from subtracting with 275 to 50, and that's how i got my answer. (: