In the given question, all necessary information's are already provided. Only thing is using them to find the required answer. Here it is already given that that hourly earning rate after deducting of taxes is $8. Also it is given that i have to pay an insurance amount of $200 in a month. It is required to find the amount of time required to make up for the insurance amount.
Now
I earn an amount of $8 in = 1 hour
For earning an amount of $200, time required = (200/8) hours
= 25 hours.
So i have to work 25 hours to earn an amount of $200 for paying my insurance amount.