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Fritz drives a distance of 381 km in 2 hours and 18 minutes.
He then drives 75 km at a constant speed of 30 km/h.
Calculate his average speed for the whole journey.

Respuesta :

2hrs and 18 mins = 138 mins

381 km / 138 mims = 2.76 km / minute

2.76 km / min * 60 = 165.6 km / hr

His two speeds for the whole journey include 165.6 km / hr and 30 km / hr.

165.6 + 30 = 195.6

195.6 / 2 = 97.8 km / hr

The average speed is 97.8 km / hr

Answer:

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