On a bike trip, Erika rides 5 miles in the first 30 minutes and 13 miles in the next hour. What is her average rate of speed?
2 answers:
Answer:
12 miles per hour
Step-by-step explanation:
Speed is the ratio of distance travelled to the time used.
The total distance covered = (5 + 13) miles
= 18 miles
The whole journey took 1 hour + 30 minutes = 1.5 hours
Average rate of speed =
=
= 12 miles per hour
Therefore, her average rate of speed is 12 miles per hour.
Her average speed was 12 miles per hour. Total distance over total time.
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