Answer:
Let's first convert 1/6 mile into minutes by multiplying the distance by the number of minutes per mile:
1/6 mile * (1 minute/1/6 mile) = 6 minutes/mile
Next, let's convert the 7/9 minutes into miles:
7/9 minutes * (1/6 mile/minute) = 7/9 * 1/6 mile = 7/54 miles
Now that we have the distance and time in the same units, we can calculate Ed's speed as:
Speed = Distance / Time = 7/54 miles / 7/9 minutes = 7/54 miles / (7/9 * 1 minute) = 7/54 miles / (7/9) minutes = 7/54 miles / (7/9) = 54/7 miles/minute
So, Ed's speed is 54/7 miles per minute.
Explanation: