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Un biciclist parcurge o distanta in 5 ore mergand cu 20 km/h. In cat timp parcurge acea distanta alt biciclist care merge cu 25km/h?

Răspuns :

[tex]viteza[/tex] [tex]b_{1}=20km/h [/tex]
[tex]timp[/tex] [tex]b_{1}=5h [/tex]
[tex]viteza[/tex] [tex]b_{2}=25km/h [/tex]
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distanta totala(d)= ?
timp b2 pe aceeasi distanta([tex] t_{b2} [/tex]) = ?
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[tex]d=v*t=20\frac{km}{h}*5h=100km[/tex]

[tex]t_{b2}=\frac{d}{v}=\frac{100km}{25\frac{km}{h}}=4h[/tex]