Minutes 7720

Miloš goes to school on roller skates at a speed of 18 km/h. The journey takes 15 minutes. What speed does he have to go if he wants to be at school 5 minutes earlier?

Correct answer:

v =  27 km/h

Step-by-step explanation:

18·15/60 = v · (15-5)/60

10v = 270

v = 270/10 = 27

v = 27

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