math calculations

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i have boards coming up and i dont know if im panicking or i just dont know it..but i was given a practice exam and i am stuck on the following question:

Tobramycin injection is given in d5w/50ml as 250mg over 20 mins every 8 hours. How many mg are adminstered on a daily basis?:confused::confused:

would someone be so kind to assist me with this matter..its greatly appreciated!!:nuke:

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Specializes in Acute Care, Rehab, Palliative.

750 mg would be my answer.250 mg every eight hours. 24 hours divided by 8 is 3. 3x 250 = 750

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OMG thank you sooo much i was struggling so hard!!

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