SOLUTION: A nurse is told to give a patient recovering from surgery a total of 21 units of a potent antibiotics over 3 days. The dosage should be cut in half the second day, then in half ag

Algebra ->  Equations -> SOLUTION: A nurse is told to give a patient recovering from surgery a total of 21 units of a potent antibiotics over 3 days. The dosage should be cut in half the second day, then in half ag      Log On


   

Question 944119: A nurse is told to give a patient recovering from surgery a total of 21 units of a potent antibiotics over 3 days. The dosage should be cut in half the second day, then in half again for the third day. How many units should she administer on the first day??
Pleae help. I know it's easy but I can't seem to grasp where to start
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The description uses a pattern. Follow the pattern.

DAY 1: x units
DAY 2: x%2F2 units
DAY 3: x%2F%282%2A2%29 units
Total Units: 21 units