can anyone help me with this question please?

[ilovemarkb]

scopolamine 0.18mg is required, stock contains 0.4mgs in 2ml, what volume needs to be drawn up?


I,ve answered it twice and got 2 completely different answers and they are both wrong THANKYOU

[sunny-dave]

0.18 divided by 0.4 times 2 = 0.9ml

[Flyhalf]

90 cl, 45% of total.

[factor-fiction]

Yes, 0.9ml

[Flyhalf]

45% of total, ie 0.9ml. Sorry, last effort was not supposed to go!

[pizza]

you need to speak to a nurse or gp

[quinie]

0.9ml?

[ilovemarkb]

thanks guys think its the decimal point thats confused me so basically its

0.18 multiply by 2 then divide that answer by 0.4

would i get the same answer if to make life easier I just move the decimal point two places to th right so I end up with a 18 and a 40 ??

[mike11111]

Yes, 36/40 = 0.9

[ilovemarkb]

thankyou got it now!!