Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 22: 118

$0.035$

Body wt in lb $=135$ hr of drinking $=3$ number of oz $=36$ % alcohol $=4$ $\text{ BAC } = 36 \times 4 \times 0.075 \div 135- 3 \times 0.015$ $\text{ BAC } = \dfrac{36 \times 4 \times 0.075 }{135} - 3 \times 0.015$ $\text{ BAC } = \dfrac{10.8}{135} - 0.045$ $\text{ BAC } = 0.08 -0.045 = 0.035$