Question

Starting at home, Luis traveled uphill to the gift store for 505050 minutes at just 666 mph. He then traveled back home along the same path downhill at a speed of 121212 mph.
What is his average speed for the entire trip from home to the gift store and back?

Answer 1

Answer:

60939mph

Step-by-step explanation:

666+121212=divided by 2

Answer 2

The average speed is 8 mph

Step-by-step explanation:

Time taken on going to gift store =$50 minutes =\frac{50}{60} hour$

Speed on going = 6 mph

Distance covered on going =$Speed \times Time = 6 \times \frac{50}{60}=5 m$

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

Time on returning = $\frac{Distance}{Speed}=\frac{5}{12} hours$

Average speed =$\frac{\text{Total distance}}{\text{Total time}}$

Average speed =$\frac{5+5}{\frac{50}{60}+\frac{5}{12}}$

Average speed = 8

Hence The average speed is 8 mph

#Learn more:

A car travels the first 50km of its journey at an average speed of 25m/s and the next 120 km at an average speed of 80km/h. the car completes the last part of its journey at an average speed of 90km/h in 35 minutes. find the average speed

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