SOLUTION: Laura rode her bicycle at 15 miles per hour for 2 hours , and then 12 miles per hour for 1 hour . What was her average speed for the entire ride?

SOLUTION: Laura rode her bicycle at 15 miles per hour for 2 hours , and then 12 miles per hour for 1 hour . What was her average speed for the entire ride?

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Question 984809: Laura rode her bicycle at 15 miles per hour for 2 hours , and then 12 miles per hour for 1 hour . What was her average speed for the entire ride?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
15 mph for 2 hrs=(15mph)(2hrs)=30 miles
12 mph for 1 hr=(12mph)(1hr)=12 miles
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Laura rode a total of (30mi+12mi=) 42 miles in 3 hours so:
42mi/3hrs=14 mph
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ANSWER: Laura's average speed was 14 miles per hour.
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