math question

Question

The doctor finally figures out what is wrong with you and prescribes a medicine that will return you to full health. The order is for 25 mg of the medicine. The nurse walks in with a liquid and you ask to see the bottle. The bottle says 100 mg of medicine per 15 ml of liquid. How many milliliters should she give you? Would she need to bring that to you in a dropper, a little cup, a glass, or a large bottle?

Answer 1

The bottle has 100mg per 15ml...

 

We need 25 mg which is 1/4 of the 100 mg

 

You need to take 1/4 of the 15 ml to get 25 mg of medicine

 

(1/4)(15) = 15/4 = 3 3/4 or 3.75 ml

 

If you are using a 1 ml calibrated glass dropper you would have

to fill it 3.75 times...  I would suggest the little cup.