They are already in order from greatest to least
Evan is not correct. While 25 is 125% of 20, it was <em>not</em> 125% more. That would be adding on to the 100% already there, for a total of 225%. It's actually only 25% more because of this.
Ddddddddddddddddddddddddddddddddddddddd
-3(6-10v-5v)
=-3(6-15v)
=-18+45v
-18+45v is the final answer.