Since like the other problem, each line represents two, you have to multiply how many lines are being covered by two, so 4*2 is eight, and the last number in the tenths place that was covered was 20, so 20+8=28. So there are 28 liters of water in Jose's container.
Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)