Lee and garth left the library at the same time and walked in opposite directions. On the same street avenue lee averaged 3 miles per hour and garth averaged 3.5 miles per hour. How long did it take them to be 3.25 miles apart?
They separate at a rate of 6.5 mph. In 1/2 hour their separation is 3.25 miles.
To find out how long it took Lee and Garth to be 3.25 miles apart, we need to first determine how far apart they are after a certain amount of time.
Since they are walking in opposite directions, their combined speed will determine how quickly they move away from each other. The combined speed is calculated by adding their individual speeds together: 3 mph + 3.5 mph = 6.5 mph.
To find out how long it takes for them to be 3.25 miles apart, we can use the formula:
Time = Distance / Speed
Plugging in the values, we get:
Time = 3.25 miles / 6.5 mph
Now, let's calculate the time it took them.
Time = 3.25 / 6.5
= 0.5 hours
Therefore, it took Lee and Garth 0.5 hours (or 30 minutes) to be 3.25 miles apart.