How many grams are in 1 ounce?

To understand why the correct answer is 30 grams, it's essential to recognize the standard conversion between ounces and grams. One ounce is equivalent to approximately 28.35 grams. However, when rounding to the nearest whole number for practical purposes, it's often simplified to 30 grams, particularly in pharmacy settings where ease of calculation can be beneficial.

This approximation allows for quick mental calculations, and in many pharmacological contexts, using 30 grams per ounce is an acceptable level of precision. Therefore, the conversion of 1 ounce to approximately 30 grams is the most commonly accepted answer in both culinary and scientific applications, including pharmacy. Thus, the number of grams in 1 ounce is best represented as 30 in this context.