To travel 145 miles in 3.5 hours requires an average speed of 145/3.5 mph. The distance traveled at this speed for 5 hours would be approximately 207 miles (5 x 145/3.5 miles).
3 hours
Assuming a constant velocity, lets break it down.145 / 3.5 = 41.428571441.42mph is the average speed for your first 3.5 hours. So....41.42 * 5 = 207.1207.1 miles in 5 hours time.
six hours 870 / 145 = 6
3 hours 13 minutes.
Miles are a measurement of distance. Hours are a measurement of time. These two have no connection, unless you are trying to ask how long it would take you to travel 145 miles. In this case, it would depend on your travelling speed.
it would take 1.93333333 hours
6 Hours
Travel time by car: 145 hours Travel time by plane: 18 hours Distance: 8960 miles or 14419 Km
Distance = Rate * Time or, for our purposes Time = Distance/Rate Time = 870 miles/145 miles per hour = 6 hours --------------
145/2=72.5 MPH
It will take six hours.
time = distance / speed = 145 miles / 70 miles/hour ~= 2.07 hours ~= 2 hours 4 mins