Minutes 5934

The thief stole Peter's bike and rode it down the road at 25 km/h. Peter's older brother saw it in half a minute and caught up with the thief in 5 minutes on the second lap. How fast must Peter's brother have been driving?

Correct answer:

v =  27.5 km/h

Step-by-step explanation:


25·(0.5 + 5)/60 = v · 5/60

5v = 137.5


v = 137.5/5 = 27.5

v = 55/2 = 27.5

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