Here is my problem. A doctor ordered 15-30 mg of a solution to be administered every 6 hours. The solution is 20mg. in every 5ml. How many ml. should be administered for each dose? Show a range. I don't even know how to set this up, except for let x equal the ml. for each dose. I have math disorder, and these word problems drive me crazy! Could someone please show me, step-by-step how to solve this? Thank you.
need help witha conversion problem
- Thread starter rsball
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- Apr 12, 2005
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Unless you are Bertrand Russel, I dare you to show me a problem without words. Whoever told you that "word problems" are tough should be slapped. Be gentle. Whoever told you that you have "math disorder" also should be slapped. Be gentle again.
First, what a silly problem. Why would a doctor order a range? That is quite bizarre.
Second, this is a simply proportion
\(\displaystyle \frac{20\; mg}{5\; mL} = \frac{5\; mg}{1.25\; mL}\)
Multiply that last expression by 3 to get the low end.
Multiply that value by 2 to get the high end.
Now, think aboiut why that works. What say you?
First, what a silly problem. Why would a doctor order a range? That is quite bizarre.
Second, this is a simply proportion
\(\displaystyle \frac{20\; mg}{5\; mL} = \frac{5\; mg}{1.25\; mL}\)
Multiply that last expression by 3 to get the low end.
Multiply that value by 2 to get the high end.
Now, think aboiut why that works. What say you?