Did you read your question before posting it? Apart from the fact that few cars can travel at 350 miles per hour, the question asks how much time ...[for] ... 3 hours. The answer, obviously, is 3 hours!
If an object travels at a speed of 55 miles per hour, to find out how far it will travel in 5.0 hours, you can multiply the speed by the time: 55 miles per hour × 5.0 hours = 275 miles. Therefore, the object will travel 275 miles in 5.0 hours.
385
40 x 2.5 = 100 miles.
120/3 = 40 miles per hour. So it will take 1 hour to go 40 miles.
15 hours and 2 minutes.
238 miles in 3 hours and 30 minutes = 68 mph
If an object travels at a speed of 55 miles per hour, to find out how far it will travel in 5.0 hours, you can multiply the speed by the time: 55 miles per hour × 5.0 hours = 275 miles. Therefore, the object will travel 275 miles in 5.0 hours.
If the car travels 125 miles in 2 hours, its speed is ( \frac{125 \text{ miles}}{2 \text{ hours}} = 62.5 \text{ miles per hour} ). To find out how far it will travel in 7 hours, multiply the speed by the time: ( 62.5 \text{ miles per hour} \times 7 \text{ hours} = 437.5 \text{ miles} ). Therefore, the car will travel 437.5 miles in 7 hours.
It travels 288 miles in 4 hours 30 minutes at that speed.
A submarine that travels 56 miles in 4 hours averages 16 miles per hour. (The 56 miles divided by 4 hours = 16 miles per hour.) To cover 700 miles at 16 miles per hour will take 700 miles divided by 16 miles per hour = 50 hours.
The car will travel 297.5 miles.
385
55 x 6 = 330 miles.
40 x 2.5 = 100 miles.
It really depends on the speed of the car. If it is traveling at 60 miles per hour, it would travel 120 miles. If it is traveling at 20 miles per hour, it would travel 40 miles.
5 hours and 2 minutes.
120/3 = 40 miles per hour. So it will take 1 hour to go 40 miles.