Answer: 5 hours
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Here are two ways to solve
Method 1
First determine her speed if she goes 737 miles in 11 hours.
distance = rate*time
d = r*t
737 = r*11
737 = 11r
11r = 737
r = 737/11
r = 67
Her speed is 67 mph. Use this to find how long it would take if she drove 335 miles.
d = r*t
d/r = t
t = d/r
t = 335/67
t = 5 hours is the time it takes to drive 335 miles assuming Martina drives at the same speed.
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Method 2
We can use a proportion to solve
(distance 1)/(time 1) = (distance 2)/(time 2)
(737 miles)/(11 hours) = (335 miles)/(x hours)
737/11 = 335/x
737*x = 335*11 .... cross multiply
737x = 3685
x = 3685/737 ..... divide both sides by 737
x = 5
We get the same answer of 5 hours.