x nr km in localitate
x+(x+450)=1250
2x=1250-450
2x=800
x=400 km ( in localitate
x+450=850 km exterior
9,2 l ..........................100km
a l ...........................800 marimi direct proportionale
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[tex] \frac{9,2}{a} = \frac{100}{800} [/tex]⇒a=73,6 l ( in exterior)
analog pt interior si aduni rezultatele
11.45 l ..........................100km
b l ...........................400 marimi direct proportionale
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