Question

A physician directs a patient to take 1 g of vitamin C each day. How many 250-mg tablets must be taken each day?

Answer 1

4, think of it like quarters.
There are 1000 mg in 1 g.
If there are 250 mg pills, and the patient needs to take 1g (or 1000 mg)
The proper way to solve this is computing 1000/250, which is 4.

Answer 2

Answer: 2 tablets a day

Explanation:

First, we need to convert these two amounts (0.0030g and 2.0mg) into the same base.

Well, it turns out that 1 mg = 0.001g.

So, 2mg = 0.002g

So how many 0.002g tablets does someone need to take 0.003g of B2?

We can divide 0.003g by 0.002g (or really just 3 divided by 2.) It turns out that the person needs to take 1 and 1/2 tablets a day to get the proper amount of this vitamin.

Practically though, the person would probably takes 2 tablets a day.