Answer:
t=9
Step-by-step explanation:
Move all terms that don't contain
t to the right side and solve.t=9
Set up a proportion:

=

To solve cross multiply:
3000x=300000
divide both sides by 3000:
3000x/3000=300000/3000
x=100
It will take her 100 hours to drive 4000 miles assuming she continues to travel at this rate.
A unit rate is when it is in simplest form