How much time has a team spent on points

Question

A team had finished 115points of work in 9sprints (one sprint is 2weeks) in 9sprints they avg out to 422.66 hrs

how much time is spent on each point?

confused on this so far I did the below..

115/9=12.7pts avg per sprint

422.66/12.7=33.28hrs spent per sprint

Sprints Hr based on 2019 and 2020

1 181019 543

2 181102 400

3 181116 513

4 181130 432

5 181214 553

6 181228 211

7 190111 298

8 190125 434

9 190222 420

422.6666667 Avg hrs

115 pt of work

Answer 1

Consider your units. The first calculation you are doing is pts/sprint, the next one is (hrs/sprint) / (pts/sprint). When you cancel out the sprint units, you get hrs/pts. So your answer, which is almost correct, should be in hrs spent on each point.

An easier way to do it would be to eliminate the sprint number. Consider setting it up as a simple algebra problem:

[total hours] = [total points] * [avg hours / point]

Notice that the points units cancel out, which helps you to know you set it up right. When you plug in the numbers:

422.66 = 115 * x

x= 422.66/115 = 33.08