810 minutes
13 hours 30 minutes
Step-by-step explanation:
Let the unknown value be x
[tex]5\:miles = 45 \: minutes\\90\:miles = x\:minutes[/tex]
Sole the proportion for x ; Cross Multiply
[tex]5\times \:x =90 \times 45\\\\5x\: = 4050[/tex]
Divide both sides of the equation by 5
[tex]\frac{5x}{5} = \frac{4050}{5} \\\\x = 810 \:minutes =\\13 \:hours \:30\:minutes[/tex]