Cinema phone pursuit

Eve left the cinema at a speed of 4 km/h. Half an hour later, Adam left after her with the mobile phone that Eve had forgotten at the cinema. It was moving at a speed of 6 km/h. How long will it take Adam to catch up with Eve, and how many kilometers from the cinema will it be? (x choose Adam's time, Eve moves half an hour longer).

Final Answer:

x =  1 h
s =  6 km

Step-by-step explanation:


4·(x+1/2)=6·x

4x = 4


x = 4/4 = 1

x = 1

Our simple equation calculator calculates it.
s=6 x=6 1=6 km



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