Answer:
Therefore his average speed for the entire trip is 8 mph.
Step-by-step explanation:
Given, In 50 minutes Luis traveled uphill to gift store at 6 mph.
6 mph means in 1 h= 60 minutes Luis can covered 6 mile.
In 1 minutes Luis can covered
mile.
In 50 minutes Luis can covered
mile
= 5 mile
Again when he come back at home, the speed was 12 mph.
12 mph means in 1 h= 60 minutes Luis can covered 12 mile.
Therefore he traveled 12 mile in 60 minutes
He traveled 1 mile in
minutes.
He traveled 5 mile in
minutes
= 25 minutes.
Total distance for the entire trip is =(5+5) mile=10 mile
Total time for the entire trip is = (50+25) minutes = 75 minutes
![\textrm{Average speed}=\frac{\textrm{Total distance}}{\Textrm {total time}}](https://tex.z-dn.net/?f=%5Ctextrm%7BAverage%20speed%7D%3D%5Cfrac%7B%5Ctextrm%7BTotal%20distance%7D%7D%7B%5CTextrm%20%7Btotal%20time%7D%7D)
m/min
mph
= 8 mph
Therefore his average speed for the entire trip is 8 mph.