OG详解-OG6 数学2 Q13

The correct answer is 774. It’s given that Brian saves 25​​ of the $215 he earns each week from his job. Therefore, Brian saves(25​​) ($215), or $86, per week. If Brian continues to save at this rate of $86 per week for 9 weeks, then he will save a total of (9)(86), or 774, dollars.