Brandon wants to buy a specific baseball bat. He is hoping that he will be able to save enough money to buy it in time for the summer baseball season. The new Super Pro Aluminum Bat costs $179.99 plus 6% sales tax. Brandon has already saved $62.50 from mowing lawns. He will continue his summer job and earn $31.25 per week. How many weeks will it take him to save enough money for the baseball bat?