# Proportion Pharmacy Math Question using 70% Dextrose and Tic-Tac-Toe Board

Ratio and Proportion Pharmacy Math Question: How much diluent and concentrate is needed?

You need 50 mL of 5% dextrose for a patient. You have 70% dextrose 1000 mL on hand. How much concentrate will you need? How much diluent?

### Comments for Proportion Pharmacy Math Question using 70% Dextrose and Tic-Tac-Toe Board

Average Rating

 Rating 5 parts 70% Dextrose (D5W) and 65 parts Sterile Water for Injection by: David Tic Tac Toe board:higher strength (top left): .70%..........5 parts 70%.....\....../..............desired strength............(middle)....................5%..................../.....\..............lower strength..............(bottom).............0%............65 parts 0%..........(sterile water) The volume desired is 50ml of 5%.Dividing 50ml into 70 equal parts: 50/70 = 5/7 = 0.714285We will use 5 parts of the 70% dextrose.5 X 0.7142 = (approx) 3.577mLWe will use 65 parts of the 0% solution.(Sterile water for injection),65 X 0.7142 = 46.423mLIn this example, the diluent (a substance used to dilute another substance) is the 65 parts of the 0% solution (46.423mL sterile water for injection.)Also, in this example, the concentrate (or concentrated part of the volume) is the 70% dextrose (5 parts = 3.577mL)

[?]Subscribe To This Site