All rights reserved . Please read our Privacy Policy . Miles per hour or feet per second are both rates of speed. Unit price is a particular rate that compares a price to some unit of measure. Smart shoppers know how to estimate unit prices when deciding whether it's better to buy a larger size of an item.
Many everyday problems involve rates of speed, using distance and time.
We can solve these problems using proportions and cross products. Examples Let's say you rode your bike 2 hours and traveled 24 miles. 12 miles per hour. Now let's say you rode your bike at a rate of 10 miles per hour for 4 hours. Next, you ride 18 miles and travel at a rate of 12 miles per hour.