Question

Pharmacists sometimes measure medicines in the unit of "grains," where 1 gr = 65 mg. The label on a bottle of aspirin reads "Aspirin, 5 gr." How many mg of aspirin are in a tablet containing 5 gr?

Answer 1

325mg of Aspririn

Step-by-step explanation:

First you should note the information that the problem gives you:

- The bottle of Aspirin has 5gr (grains)

- 1gr(grain) = 65mg (miligrams)

Also, the problem is asking about how many aspirin are in 5 gr (grains), so you should use a conversion factor, as follows:

-First you should put the quantity you need to convert:

`5grAspirin`

-Then you write the denominator of the conversion factor that must have the same units that you want to convert, in this case gr:

`5grAspirin*\frac{}{1grAspirin}`

-Then you write the numerator with the units that you want to obtain and the numerical equivalence between the units, in this case:

`5grAspirin*(65mgAspririn)/(1grAspirin)`

-Finally you multiply numerators and divide by denominators:

`5grAspirin*(65mgAspririn)/(1grAspirin)=325mgAspririn`