## What type of math?

by jasna

(Florida)

My Cd tells me to solve this problem here using (IS)(IV)=(FS)(FV) I, don't really understand that method, Is there any other way I can do this problem ?

You have been asked to prepare 20ml of a drug dilution of 50mg/ml from a stock solution of 2g/5ml. How many milliliters of diluent will be needed ?