simple math ques but I am confused

It doesn't matter what the units are, the math process is the same. Looks to me like they are testing your ability to apply the process and how you can think critically/logically about a problem.

I'm sorry are you asking how the question should be worded or how to solve the question?

158/2.2=71.81kg

71.81x2mcg=143.63mcg

143.6 is your answer I think- is that the same as you are getting? If you wanted it in mcg/min, you would just then divide by 60.

Hi. IDK if you are new to the site, you appear to be a student - but your screen name says RN. The site has rules against this, so when posting a question like this be careful because STAFF monitors the questions pretty often and if I noticed it, they might also notice it. So you may want to adjust your screen name if you are a student, because you cannot put RN credentials behind your name otherwise. GOOD LUCK TO YOU!

Could be RN to BSN.

Could be RN to BSN.

She already has a BSN, so maybe she is asking how the question should be worded. I went back and corrected myself, because now I think I misunderstood the question.

158lb/2.2lb= 71.81kg convert pt weight into desired system of measurment

2mcgx71.81kg=143.62mcg/hr

The question is correct because you cant have the answer in mcg/kg/min or per hr because you have used the KG portion to solve the problem. Therefore your answer is either in mcg/min or per hr depending on what you want to input.