Minutes 4465

Peter and Karel live at the same address. Peter will drive to the stadium in 30 minutes and Karel in 40 minutes. If Karel goes 5 minutes early, where will Peter catch up?

Correct answer:

p =  50 %

Step-by-step explanation:

s=100 v1​=s/30=100/30=310​≐3.3333 v2​=s/40=100/40=25​=2.5 p = v1​ t = v2​ (t+5) v1​ t = v2​ (t+5) v1​ t = v2​ t + 5 v2​ t=5⋅ v2​/(v1​−v2​)=5⋅ 2.5/(3.3333−2.5)=15 p=v1​⋅ t=3.3333⋅ 15=50%

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