Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 22: 120

$ 0.054 $, BAC value will be lower.

Given $W=150\ lb, t=2\ hr, B=2\times6=12\ oz, c=14\%$, use the formula we have: $BAC=12\times 14\times 0.075 \div 150 - 2\times 0.015= 0.054 $ Increasing the time $t$ while keep other numbers the same will reduce the BAC value because $t$ is in the second negtive term.