SOLUTION: Sarah drove her boat at 5 miles per hour for 45 minutes and at 4 miles per hour for 30 minutes. What was the total distance, in miles, that Sarah drove her boat? A)2 miles B)5 3

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Sarah drove her boat at 5 miles per hour for 45 minutes and at 4 miles per hour for 30 minutes. What was the total distance, in miles, that Sarah drove her boat? A)2 miles B)5 3      Log On

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Question 739416: Sarah drove her boat at 5 miles per hour for 45 minutes and at 4 miles per hour for 30 minutes. What was the total distance, in miles, that Sarah drove her boat?
A)2 miles
B)5 3/4 miles
C)9 miles
D)16 1/2 miles
I don't understand how to do this? Can you help?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Sarah drove her boat at 5 miles per hour for 45 minutes and at 4 miles per hour for 30 minutes. What was the total distance, in miles, that Sarah drove her boat?
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change minutes to hours
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Sarah drove her boat at 5 miles per hour for 3/4 hour and at 4 miles per hour for 1/2 hour. What was the total distance, in miles, that Sarah drove her boat?
d = r*t
d = 5*(3/4) + 4*(1/2)
d = 15/4 + 2 = 23/4 miles
d = 5 3/4 miles