# Question #392bf

##### 1 Answer

#### Explanation:

The idea here is that you know how much tetracycline the patient must take **every six hours**, and that you have some stock tablets that contain *each*.

The first thing that you need to determine is how many tablets will you need to provide

To do that, first convert the amount of tetracycline each tablet contains from miligrams to grams

#500color(red)(cancel(color(black)("mg"))) * (10^(-3)"g")/(1color(red)(cancel(color(black)("mg")))) = "0.5 g"#

This means that you need to give your patient

#1.0color(red)(cancel(color(black)("g tetracycline"))) * "1 tablet"/(0.5color(red)(cancel(color(black)("g tetracycline")))) = "2 tablets"#

**every six hours** in order to get the correct dosage per day.

If you take into account the fact that one day has **24 hours**, the total number of tablets you must have on hand is

#24color(red)(cancel(color(black)("hr"))) * "2 tablets"/(6color(red)(cancel(color(black)("hr")))) = color(green)("8 tablets")#

Give your patient a total of **eight** **every day**.