Answer: The benefit is of $805.50
Explanation:
We know that the benefit of Sally is equal to $322.20, and it equal to the 40% of the one of Bill.
Then, if the benefit of Bill is X, whe have that:
$322.20 = 0.4*X
now we can solve this equation for X and find the benefit that Bill receives:
X = $322.20/0.4 = $805.50