The distance to the first delivery is 12 1/3miles. the distance between the next three delivery is is 8 3/4 miles, 17 2/8 miles, and 23 2/3 miles respectiviely. the distance from the final delivery to the shop is 10 5/10 miles. what is average distance for all segments of this trip?

The average value of something, is the (sum of the data elements) / (how many elements).

for example, in this case we have 5 elements, 5 delivery distances, so the average distance for them will be, their sum divided by 5, so let's do so them, firstly changing the mixed fractions to "improper" fractions,





now, let's add them up, and divide by 5,

Whose mistake? can you give more details to what the question is asking?