Present amount of all future benefits
$P = \dfrac{A[ \, (1 + i)^n - 1 \, ]}{(1 + i)^n \, i}$
$P = \dfrac{60,000[ \, (1 + 0.07)^8 - 1 \, ]}{(1 + 0.07)^8 (0.07)}$
$P = \$358,277.91$
Benefit-Cost Ratio
$\text{BCR} = \dfrac{358,277.91}{180,000}$
$\text{BCR} = 1.99$ ← answer
