Respuesta :

Answer:  2.5 cm

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Work Shown:

(1 cm)/(30 km) = (x cm)/(75 km)

1/30 = x/75

1*75 = 30*x

75 = 30x

30x = 75

x = 75/30

x = 2.5

A bar of 2.5 cm corresponds to 75 km.