Answer:
Step-by-step explanation:
Given as :
The distance cover while running = = 5 miles
Let The speed for running =
The distance cover with bike = = 80 miles
The speed for biking = = 15 mph +
Total Time taken = 5 hours
Now Time =
∴ 5 hour = +
Or, 5 hour = +
Or, 5 hour =
or, 5 × () =
Or, -
= 0
or, = 0
or, = 0
Or, = 0
Or, = 0
Or, = 0
∴ = 3 , - 5
So, the running speed = 3 mile per hour
And the biking speed = 15 mph + 3 mph = 18 mile per hour
Hence The running speed of Stu is 3 mile per hour . Answer
