The most common way to complete the 52-week challenge is to save Php 20 in the first week and increase what you save by Php 20 each week. If you save 20 pesos the first week, and then you save Php 40 in week two, Php 60 in week three, all the way to Php 1,040 in week 52. Your total savings at the end of 52 weeks will be Php 27,560