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At an immunization clinic, there is one scheduled appointment every five minutes starting at noon. Each patient arrives exactly at the scheduled time, spends 10 minutes in the lobby doing paperwork, then five minutes out of the lobby getting shots, and finally 20 minutes in the lobby to be sure there is no adverse reaction. How many patients are in the lobby at 12:34 p.m.?

 May 30, 2020
 #1
avatar+107 
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6 patients.

 May 30, 2020
 #2
avatar+27847 
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1 st patient at 1200    in lobby until 12 35

2nd patient at 12 05    in lobby until 12 40

3rd patient   at 12 10   in lobby until 12 45

4th patient   at 12 15    in lobby until 12 50

5th patien   at 12 20      getting a shot at 12 34

6th patient   at 12 25     in lobby until 12 35

7th patient   at 12 30     in lobby until 12 40                                  6 patients are in the lobby at 12 34

 May 30, 2020

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