Sarah M.

asked • 02/09/15

If the patient has to be administered a dosage of 2 tablets every 2 hours for 7 days, what is the number of tablets required for the prescribed dosage?

If the patient has to be administered a dosage of 2 tablets every 2 hours for 7 days, what is the number of tablets required for the prescribed dosage?
Express your answer as a whole number.

Vivian L.

quantity-of-tablets=(7-days)(2-tablets/2-hours)
Let's call quantity-of-tablets the unit of y...
y=(7-days)(2-tablets/2-hours)
The number 2, located in the numerator and denominator cancel.  Therefore...
2-tablets/2-hours=1-tablet/1-hour
y=(7-days)(1-tablet/hour)
Let's convert days into hours...
(7-days)(24-hours/day)
The units of day(s), located in the numerator and denominator, cancel...
(7-days)(24-hours/day)
(7)(24-hours)=168 hours
y=(168-hours)(1-tablet/hour)
The units of hours, located in the numerator and denominator, cancel...
y=(168-hours)(1-tablet/hour)
y=168
 
The quantity of doses is...
168-hours/2-tablets=84-doses
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02/09/15

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