Respuesta :

Answer:

20 minutes I think Maybe it is if it's not Then I don't know

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

Let's use simple unitary method ~

[tex]\qquad \sf  \dashrightarrow \: 1 \: hr = 60 \: min[/tex]

[tex]\qquad \sf  \dashrightarrow \: \dfrac{3}{2} \: hr = (60 \times \dfrac{3}{2} ) \: min[/tex]

[tex]\qquad \sf  \dashrightarrow \: \dfrac{3}{2} \: hr = (30 \times 3 ) \: min[/tex]

[tex]\qquad \sf  \dashrightarrow \: \dfrac{3}{2} \: hr = 90\: min[/tex]

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