I feel like there are missing variables to this problem, which is where i'm getting stuck. I feel as if i might need to enter in dummy values to make the problem work?
You drive on Interstate 10 from San Antonio to Houston, half the time at 69 km/h and the other half at 97 km/h. On the way back you travel half the distance at 69 km/h and the other half at 97 km/h. What is your average speed (a) from San Antonio to Houston, (b) from Houston back to San Antonio, and (c) for the entire trip? (d) What is your average velocity for the entire trip?