Smart Serve Ontario Practice Test – Free Mock Exam & 2025 Study Guide

To estimate Sheila's Blood Alcohol Concentration (BAC), several factors need to be considered, including her weight, the number of drinks consumed, the time over which they were consumed, and the general guideline for BAC calculations.

In this case, Sheila weighs 125 pounds and has had 3 standard drinks over a period of 2 hours. Generally, it's estimated that one standard drink raises BAC by approximately 0.02% for an average person. Since Sheila consumed 3 drinks, her initial BAC would be calculated as approximately 0.06% (3 drinks x 0.02%).

Given that she consumed these drinks over 2 hours, the body metabolizes alcohol at a rate of roughly 0.015% per hour. Thus, after 2 hours, Sheila's BAC would decrease by about 0.03% (0.015% x 2 hours).

Starting with an estimated BAC of 0.06% from the drinks and then subtracting the 0.03% from metabolism gives us approximately 0.03%. This figure does not align with the answer provided, but it suggests that perhaps more nuanced calculations or specific formulas for Sheila's unique factors or local laws might yield a figure closer to 0.08