NAME_1 decided to become a ride-hailing driver and needs to determine how many hours per week she wants to work. She values consumption C (in R$) and spending time with her family (leisure L). Her utility function is U(C, L) = 1/2ln(C-40) + 1/2ln(L). Her salary for the new job is $20 per hour worked, and let's assume NAME_1 has a maximum of 80 hours per week that she can spend either working or on leisure.

Let's imagine that NAME_1 receives a social program that supplements her income up to $500 for those who earn less than $500 per week (and doesn't provide any additional support for those who earn more). How many hours will she work? Does this program create inefficiency?