TBH this math is confusing for most people ( Especially in this case because wuha 15 siletegeza 13 birr bihon wuha its easier to understand). The Qeri column keeps track of the cummulative sum of the difference between the items bought. Cumulatives in math show you the overall progress ( how much new input affect the total eskahun yalewn ) not the total amount there is. You can for example slice the prices like this and get a different cumulative sum. Chat -. 20 30 Wuha - 13 17 Cigara - 9 8 Lewuz - 8 0 50 55
May 03, 2021