More math problems

by Heather
(Long Beach, Ca )

Thank you for your help yesterday,
Found your website this past month and it has given me extra help for the pharmacy tech exam tomorrow.

I have 3 more math problem I've been having trouble with:

1. How many 200 mg tablets would be required to make 1.5 liters of a 1:250 solution?
Reply -Answer is here

2.How many milliliters of a 3% solution need to be used with a 12% solution in preparing 450 ml of a solution that contain 7%
Reply -
This is an Alligation


3. a technician has been given 300 ml of a 15% hydrochloric acid solution. the pharmacist asks the technician to dilute the solution to 1000 ml with sterile water and to label the final solution. What percent should appear on the label?

Reply - The Answer is here