Question

starting at home, nadia traveled uphill to the grocery store for 30 minutes at just 4 mph. she then traveled back home along the same path downhill at a speed of 12 mph.what is her average speed for the entire trip from home to the grocery store and back?

Answer 1

Distance from home to store = 4 * 0.5 = 2 miles.

Time taken to return home = (2/12) * 60 =10 minutes.

Total distance traveled = 2 * 2 = 4 miles.

Total time taken = 30 + 10 = 40 minutes.

Average speed for entire trip = total distance / total time in hours.

Explanation:

Answer 2

Distance from home to store = 4 * 0.5 = 2 miles.
Time taken to return home = (2/12) * 60 =10 minutes.
Total distance traveled = 2 * 2 = 4 miles.
Total time taken = 30 + 10 = 40 minutes.
Average speed for entire trip = total distance / total time in hours.

`Average\ speed=(4)/((40)/(60))=(4*60)/(60)=6\ mph`