Assuming two carpules total 72 mg Lidocaine, how much Lidocaine is in one carpule?

Assuming two carpules total 72 mg Lidocaine, how much Lidocaine is in one carpule?

• A. 18 mg
• B. 24 mg
• C. 36 mg
• D. 40 mg

Answer: (C)

Dividing the total amount evenly among the carpules shows how much is in each one. Two carpules have a combined 72 mg, so per carpule you get 72 mg ÷ 2 = 36 mg. Therefore, one carpule contains 36 mg of lidocaine. The other numbers would correspond to different numbers of carpules or totals (for example, 18 mg would come from dividing 72 mg by 4, and 24 mg by dividing by 3), which doesn’t match the given total.

Dividing the total amount evenly among the carpules shows how much is in each one. Two carpules have a combined 72 mg, so per carpule you get 72 mg ÷ 2 = 36 mg. Therefore, one carpule contains 36 mg of lidocaine. The other numbers would correspond to different numbers of carpules or totals (for example, 18 mg would come from dividing 72 mg by 4, and 24 mg by dividing by 3), which doesn’t match the given total.