You can represent Morgan's scenario with the expression, 25w + 615, and you can represent Kendall's scenario with the expression, 15w + 975. To find out when they both have the same amount of money in their accounts, you set them equal to each other and solve for w: 25w + 615 = 15w + 975 25w = 15w + 360 10w = 360 w = 36 Morgan and Kendall will have the same amount of money after 36 weeks.