Question

Starting at home, Emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. She then traveled back home along the same path downhill at a speed of 121212 mph.
What is her average speed for the entire trip from home to the hardware store and back?

Answer 1

Average Speed of Entire trip =  8 mph

Step-by-step explanation:

Emily traveled uphill to the hardware store for 60 minutes at just 6 mph

She then traveled back home along the same path downhill at a speed of 12 mph

60 minutes = 1 hr

During uphill

Speed = 6 mph

Distance = Speed * time =  6 * 1 = 6  miles

During downhill

Speed = 12 mph

Time = 6/12  =  0.5 hr

Total Distance = 6 + 6 = 12 miles

Total Time = 1 + 0.5 = 1.5 hrs

Average Speed of Entire trip =  12/1.5  =  8 mph

Learn more:

A car travels the first 50km of its journey at an average speed of 25m/s

https://brainly.in/question/13194768

A train completes the journey between Uptown and Downtown in an ...

https://brainly.in/question/13554555