Question

Un autoturism consuma 10 l de benzina la 100 km. Cati l consuma la un drum de 500 km ?

Answer 1

$10 \ l=100 \ km \\ x \ l=500 \ km \\ x= \frac{10}{ \frac{100}{500} } \\ x= \frac{10}{0,2} \\ \boxed{x=50 \ l}$