Can someone explain how this works

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!