AYUDA Proporcionalidad (poner pasos de como lo resuelven) 2 horas20 km 1 hora? km y luego averiguar cuantas horas serian 90 km

Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie

If you answer right ill give brainliest, : )

Multiplying fractions by whole number 5 x 1/3=?