Respuesta :

Answer:

x = 1.5 hours; 1 hour 30 minutes; 1 1/2 hours

Step-by-step explanation:

This question can be solved by using a simple proportion.

12/2 = 9/x

Cross multiply

12x = 18

x = 1.5 hours; 1 hour 30 minutes; 1 1/2 hours