Answer:
Janiya has a speed of 
 miles per hour.
Explanation:
Given that:
Distance covered = 4/5 of a mile 
Time taken to cover the distance = 1/3 of an hour 
Speed is defined as the distance travelled in a certain time. 
Speed of Janiya = 

Speed of Janiya = 

Speed of Janiya = 

Speed of Janiya = 

Speed of Janiya = 
 miles per hour
Hence,
Janiya has a speed of 
 miles per hour.