if 45 drops of water equals 1ml, and one ml equals 4mg, how many drops of water equals .5mg?

Question

Having difficulty with measurment

Answer 1

45 drops = 1 ml (milliliter) = 4 mg (milligrams) is what the first clause states.

 

So 45 drops = 4 mg (milligrams).

 

You want to know about one half mg, so divide each side of the above statement-of-fact by 8;

 

therefore 45/8 drops = 4/8 mg = 0.5 mg.

 

45/8 drops = 5.625 drops = 0.5 mg.