It is actually 5 hours 20 minutes of total driving time
NOTE: Don't forget to check your answer ,
for example to check 5 hours 20 minutes,
you check how far one covers, if driving at a constant 75 MPH, that is :
5 hours at 75 MPH:
= 5*75 = 375 miles
plus
20 minutes (which is one third (1/3) of an hour) at 75 MPH:
= (1/3)*75 = 75/3 = 25 miles
Therefore 375 miles and 25 miles for a trip total of 400 miles
and so the answer checks out.
50 minutes
11.5 hours.
20 minutes.
99 miles / 75mph = 1.32 hours, or 1 hour and 19 minutes
8 minutes.
Four minutes.
1 hour 52 minutes.
17 hours, 20 minutes.
7 hours.
3 hours 51 minutes.
Time = Distance divided by Rate Time = 411 miles/75mph = 5.48 hours Answer: It would take 5.48 hours to drive 411 miles at 75mph
2 hours 40 minutes.