Starting at home, Umaima traveled uphill to the gift store for 45 minutes at just 8 mph. She then traveled back home along the same path downhill at a speed of 24 mph. What is her average speed for the entire trip from home to the gift store and back?
To find the average, you add up all the relevant numbers and then divide by how many numbers you have. In this case, it would be (8+24)/2. That equals 16, so the answer is 16 mph.
