IDNLearn.com offers a user-friendly platform for finding and sharing knowledge. Our Q&A platform is designed to provide quick and accurate answers to any questions you may have.
Answer: 7.5 miles per hour
Step-by-step explanation:
First speed was 3 miles per hour.
Second speed was 12 miles per hour.
To do an average, add both speeds and divide by two, which is the number of trips made.
= (3 + 12) / 2
= 15 / 2
= 7.5 miles per hour