When the medication dosage ordered is different from the supply, it is necessary to make sure that both are in the same weight measure. You can either convert one or the other amount to its equivalent or use a conversion factor. Select the calculation method that uses a conversion factor to set up the problem.
A) Desire/Have *Supply = x
B) Supply/Have = x/Desire
C) Supply: Have :: x : Desire
D) Supply/Have * Desire = x

Question

Quizplus · Accepted Answer

When solving any dosage problem where the order and the supply are not in the same weight measure, it is necessary to convert one or the other amount to the same weight measure. Always convert to the measure that you "have on hand" since that is the supply that you are working with. You can either use an equivalent value or a conversion factor. When you use an equivalent value, you need to do a calculation prior to setting up your problem. Dimensional analysis allows you to use a conversion factor within the fraction setup, thereby eliminating a step and the chance for an error.

When the Medication Dosage Ordered Is Different from the Supply