Starting at home omar traveled a pill to the gift store for 30 minutes such as 10 mph event travels back home along the same path down hill at a speed of 30 mph what is his average speed for the entire trip from home to the gift store and back

We know Distance formula is  Distance = speed * time

Let, the distance Omar traveled = d  and speed is 10 miles per hour

Time taken  t for the first trip  

Let, the distance Omar traveled = d  and speed is 30 miles per hour

Time taken  t for the return  trip  

Total time taken =  

Now,

Total distance = d+d= 2d

Average speed = =

His average speed for the entire trip from home to the gift store and back is

15 miles per hour

360 different combinations

the correct answer is d

hope this