A client is receiving IV fluid replacement. The order states to give 1000 ml for the first 10 kg and 50ml/kg each 10-20 in 24 hours. The client weights 19.5 kg, what should the nurse set the hourly rate at? this question was on a comprehensive test our instructor gave us in prep for the nclex. I had a problem with the wording and understanding of the question, i get the mathematical part of it. My question is after the first 1000 ml is given my instructor said that the leftover 9.5 kg (19.5-10= 9.5) should be multiplied by 50 ml and that is added to the first 1000 and divided by 24 to get the hourly replacement. My thing is the 10-20 part doesn't make sense to me. 9.5 kg doesn't fit in the range of 10-20 kg so why would we multiply it by 50 then add that to the 1000 ml part? It would make sense if the range was 9-20 kg i would've added it but if its 9.5 its not in the range of the order and wouldn't be used to add the additional fluid. anyone else with me on this? i debated with her for a few minutes and she just kept showing me how to do it but wasn't explaining WHY. I get how she got the answer and how to work the problem. can anyone explain this to me? thanks for any help its really bothering me i think i'm just reading the question wrong i asked her to re-state the question so i could understand and she said it means what it means and couldn't state it in a different way. help?!