# Help with Math

Published

here is a math problem that always confuses me and i need a breakdown!!!

order 5mg every minute

on hand 3grain in 500ml solution. what is the ml/hour

i can never understand gr and the whole per minute part is upsetting me also!!! can someone break it down for me>

815 Posts

This is how I did it, maybe I'm wrong. Do you have the correct answer?

5mg x 60min x 1 grain x 500ml = 769.2 ml/hr

min```1 hr````65mg````3 grain

I put the little "`" in there so the spacing would work on the bottom, it wanted to bunch up

9 Posts

is there more info about this question? seems kinda lacking parts or at least the doses are kinda wacked... i'll try to answer it to the best of my ability but if anyone else has a better explanation please correct me if i'm wrong...

as far as the math is concerned grains equal either 65mg or 60 depending on where you look. according to your problem,

order 5mg every minute

on hand 3grain in 500ml solution. what is the ml/hour

so if it's 5mg q min i suggest getting the mg/hr so

multiply by 60 (5mg x (60minutes/1hr)) = 300mg/hr...

then you have on hand 3grain in 500 ml... you need to calculate the mg first... so you got 3 grains depending on the source it can either be 65mg or 60mg per grain so just for the purpose of this example we'll use 65mg = 1 grain.

3 grains x 65mg = 195mg total in a 500ml solution. now that you have that you can do this...

300mg/hr x (500ml/195mg) = 769.230 or 769 ml/hr..... i know that sounds a bit high but it's only a 500 ml fluid and if you divide that by 60 it's more like 12.82 or 13 ml/min.

hope that helps... again if anyone spotted something wrong please just correct me cause i'm not really good at this posting stuff...

815 Posts

Yea that's the broken up version of how I did it.

9 Posts

well she said break it down right???

815 Posts

haha right

16 Posts

Thanks ! I don't know why I was putting way too much thought into the problem....

16 Posts

it works it works it works!!!!!

i am so happy!!!! 75 questions, 1 math, 6-8 sata!!!!!!!!

thanks!

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