Answer:
Hence number of gtts in 20 ml is 400gtts.
Explanation:
"gtts means number of drops of water".
we know that 1 ml =20 gtts
Here we are asked to find the number of gtts in 20ml.
as 1 ml=20 gtts
⇒20 ml=20×20 gtts
⇒20ml=400 gtts.
Hence number of gtts in 20 ml is 400gtts.