How do i work out this nursing drug calculation help!!!?

can somebody please show me step by step how to do this i find the division bit hard!





388mls of blood is to be infused over 2 hours. At what rate in drops per minute should the infusion be administered?





the answer comes to 49 drops per minute (but how?)





How do i work out this nursing drug calculation help!!!?
388mls over 2 hours is the same as 388 over 120 minutes.





This is 3.233333 mls per minute.





Unlike standard fluids which run at 20 drops per ml, blood works out to 15 drops per ml.





Therefore, to give 3.23 mls per minute, you need to give 3.2333333 multiplied by 15 drops per minute. This is 48.5.





Obviously, you can't give half a drop so it is rounded up to 49 drops per minute.





The general equation is ](volume to be given [in ml]) x (drops per ml)]/time in minutes.





If you look at





http://books.google.co.uk/books?id=itNUHBoDCaUC%26amp;pg=PA66%26amp;lpg=PA66%26amp;dq=drops+per+ml+blood%26amp;source=web%26amp;ots=V9mQN0tHmy%26amp;sig=uz7t-uD3sWxCyc9KR5Dhj6jrXt4%26amp;hl=en%26amp;sa=X%26amp;oi=book_result%26amp;resnum=6%26amp;ct=result





It gives a really good explanation.





Best of luck!!


How do i work out this nursing drug calculation help!!!?
388 mls/2 hrs times 20 drops/1 ml times 1hr/60 minutes = 49 drops.minute