Final answer:
Each charity will receive approximately $166.67.
Step-by-step explanation:
In this scenario, Mary wins $500 at the raffle and donates all her winnings to three of her favorite charities. To find out how much each charity will receive, you can divide the total winnings by the number of charities. So, if she donates to three charities, each charity will receive $500 / 3 = $166.67. Therefore, each charity will receive approximately $166.67.