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Proportion Math....

by Carissa
(OH)

How many milligrams of a drug would be in one pint if each dram has 1/8th of a grain?




Reply (By Keith)

This is a great question. I say that because on the surface it seems confusing, but it's really easy if you work it from the right angle.

First, figure out how many Drams you have, then divide that by 8 (since for every 8 drams you have one grain)

so,


8 Drams = 1 oz

16 oz = 1 pint

8 X 16 = 128 drams

Now, if each 8 drams contain 1 grain, divide :


128 ÷ 8 = 16 grains

You now know you have 16 grains. Look-up how many grains per mg. So you can setup proportion math to determine how many mg. and finish.


      1 mg               1036.94 mg

  -----------      =      ------------

0.01543 gr              16 gr


Comments for
Proportion Math....

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Jan 25, 2012
Dram problem
by: Denna

I'm confused. Does it mean 8 drams in 1 grain for weight and 6 drams in 1 grain for volume? Still, the method he did is a little confusing. I don't understand that much.

Apr 11, 2011
drams
by: anonymous

The following site contains information about the units of measurement used in the United States. It includes linear measurements, finding area, cubic, liquid, apothecaries' fluid and weight, Avoirdupois weight, dry measure, troy weight and Gunter's or Surveyor's chain.

"http://www.factmonster.com/ipka/.html." Fact Monster. 2000-2007 Pearson Education, publishing as Fact Monster. 11 Apr. 2011.

Apr 01, 2011
drams
by: Anonymous

I hope there is no problem in the Exam about drams since it is little confusing

Oct 05, 2010
There are 6 drams in a fl oz
by: Anonymous

That can't be right, because 1dram=5ml
1fl oz=30 ml

So there are 6drams in an oz.

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