Final answer:
In the apothecary system, fractions are written as a combination of a whole number and a fraction. Whole numbers and half are written the same way in the apothecary system.
Step-by-step explanation:
In the apothecary system, fractions are written differently than regular units. Instead of using decimals, apothecary fractions are written as a combination of a whole number and a fraction. For example, instead of 1.5 grains, it would be written as 1 1/2 grains.
Whole numbers in the apothecary system are written the same way as regular units. For example, 6 grains in the apothecary system would be written as 6 grains. Half in the apothecary system would be written as 1/2. So, 6 1/2 grains would be written the same way in the apothecary system.