math problem...

First of all, is it a typo that you have 5 gm in 1 ml? I am thinking you mean 5 mg, right?

Your first step is to change 35 lbs into kg, divide 35 by 2.2 to get 16.

The doctor has prescribed1.25 mg for every kg, so multiply 1.25 x 16 to get 20 mg. 20 mg is what you will plug into your problem.

Then I set up a ration and proportion problem,

5 mg/1 ml = 20 mg/x ml

The answer comes out to 4 ml to administer.

I am not sure if it is a typo. It was on a math sheet that we were supposed to complete, and it is driving me nuts.

the answer comes out correct for mg, so I think it must be!

That makes perfect sense. Thank you so much. I will let the rest of the class know there was a typo, as we are all losing our minds.