the distance from Earth to Mars is 136,000,000 miles. A spacecraft travels at an average speed of 28,500 kilometers per hour. Determine, to the nearest day, how long it will take the spacecraft to reach Mars. [ 1 kilometer=0.6 miles]

A man travels at a speed of 12miller/hr . How long in minutes to the nearest integer, would he take , to cover a distance of 3750 yards ? ( 1 mile = 5280 yards).

A train travels 90 kilometers/hr. How many hours does it take the train to travel 450,000 meters? (1 kilometer = 1,000 meters)

A commercial airline has calculated that the approximately fuel mileage for its 600-passenger airplane is 0.2 miles per gallon when the plane travels at an average speed of 500 miles per hour. Flight 818's fuel tank has 42,000 gallons of fuel at the beginning of an international flight. If the plane travels at average speed of 500 miles per hour, which of the following functions f models the number of gallons of fuel remaining in the tank t hours after the flight begins?

Steve ran a 12-mile race at an average speed of 8 miles per hour. If Adam ran the same race at an average speed of 6 miles per hour, how many minutes longer did Adam take to complete the race than did Steve?

Mac travels from A to B a distance of 250 miles in 5 1/2 hours. He returns to A in 4 hours 30 minutes. His average speed is:

A car take 6 hours to reach a distination by travelling at the speed of 50 km per hour. How long will it take when the car travels at the speed of 75 km per hour ?

The distance traveled by Earth in one orbit around the Sun is about 580,000,000 miles. Earth makes one complete orbit around the Sun in one year. Of the following, which is closest to the average speed of Earth, in miles per hour, as it orbits the Sun?

Jonathan drove to the airport to pick up his friend. A rainstorm forced him to drive at an average speed of 45 miles per hour, reaching the airport in 3 hours. He drove back home at an average speed of 55 miles per hour. How long, to the nearest tenth of an hour ,did trip home take him?

Lennon has 6 hours to spend in Ha Ha Tonka state park. He plants to drive around the park at an average speed of 20 miles per hour, looking for a good trail to hike. Once he finds a trail he likes, he will spend the remainder of his time hiking it. He hopes to travel more than 60 miles total while in the park. If he hikes at an average speed of 1.5 miles per hour, which of the following system of inequalities can be solved for the number of hours Lennon spends driving d, and the number of hours he spends hiking,h, while he is at the park?