7.5 Speed

At 60 miles per hour, how long does it take a car to travel 320 miles?
[note: state the hour(s) and minute(s). e.g. 2 hours 34 minutes]

On a sunny July day, Mo starts at 10 a.m. in Calgary, at which time her car’s odometer reads 27289 kilometers. At 4 p.m. she arrives in Saskatoon, at which time her car’s odometer reads 27816 kilometers. (Mo did not need to adjust her clock for a time zone crossing, because in the summer the time in Calgary is the same as the time in Saskatoon.) What was her average speed for the trip?

Mathematical Equivalence

ON

On a trip, a car traveled 80 miles in an hour and a half, then was stopped in traffic for 30 minutes, and then traveled 100 miles during the next two hours. What was the car’s average speed (in miles/hour) for the 4-hour trip?

Peter had a 12:00 noon appointment that was 60 miles from his home. He drove from his home at an average rate of 40 miles per hour and arrived 15 minutes late. At what time did Peter leave home for the appointment?

[note: state in the form of hh:mm. e.g 11:23]

I usually walk from home to work. This morning, I walked for 10 minutes until I was halfway to work. I then realized that I would be late if I kept walking. I ran the rest of the way. I run twice as fast as I walk. How many minutes total did it take me to get from home to work?

A train is traveling 1 mile every 75 seconds. If the train continues at this rate, then how far (miles) will it travel in two hours?

Jason and Jeremy work together at a juggling-ball factory. Jason lives 25 miles away from the factory and drives at 60 miles per hour. Jeremy lives 35 miles away from the factory and drives at 70 miles per hour. If they leave their houses at the same time, then who arrives at the factory first, and how long is it until the other arrives?

[note: state in minute(s)]

A man drives from his home at 30 miles per hour to a shopping mall that is 20 miles from his home. On the return trip, he encounters heavy traffic and averages 12 miles per hour. To the nearest mile per hour, what is his average speed for the round-trip to and from the mall?