Question
Ken saved some money on the first week. Each following week, he managed to save $9 more than the week before. He saved a total of $130 after 4 weeks. How much money did he save on the 3rd week?
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Ken saved some money on the first week. Each following week, he managed to save $9 more than the week before. He saved a total of $130 after 4 weeks. How much money did he save on the 3rd week?