Terrance run 6 miles every half hour Jesse runs 2 miles every 15 minutes and Sandra runs at a rate of 8 miles in 45 minutes. How does Sandra unit rate compare to terrance and Jesse

One way to answer this is to find out how fast each person is running her hour. To do this, you will need to write a rate of miles per hour for each. Terrance runs 6 miles every half hour which would be 9 miles in 45 minutes (Take half of the 30 minutes in a half hour and add it to the 30 minutes to make 45 minutes do the same with the 6 miles to get 9 miles) Jesse runs 2 miles every 15 minutes, so she runs 6 miles in 45 minutes (triple the distance if the time triples). and Sandra's is already given in 45 mins. To compare these, Terrance is running at a rate of 9 miles in 45 mins, Jesse at 6 miles per 45 mins, and Sandra at 8 miles per 45 minutes. Terrance is the fastest and Jesse is the slowest.