Respuesta :


3 1/2  = 7/2

7/2  hours and used 1/3 tank of gas
? hours and used 1/2 tank of gas

1/2 * 7/2
------------
    1/3

= 7/4
-------
  1/3

= 7/4 * 3
= 21/4
= 5 1/4 

answer: 5 1/4 hours Tanya could drive using​ 1/2 ​tank of gas

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