<PRE><B>Question 149187</B>
The key to this problem is to determine the volume of a single teaspoon (in metric units).
.
Reference:
http://www.joyofbaking.com/USMetricVolumeEquiv.html
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1 teaspoon = 4.9 ml
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Your proportion is then:
Let x = grams of expectorant in a teaspoon
1.5/100 = x/4.9
x = (1.5*4.9)/100
x = 7.35/100
x = .735 grams (or 735 milligrams)</PRE>