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]