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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?

Respuesta :

toporc
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.
[tex]Average\ speed=\frac{4}{\frac{40}{60}}=\frac{4\times60}{60}=6\ mph[/tex]

Answer:

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.

Step-by-step explanation:

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