Question
Fred saved some money on the first week. Each following week, he managed to save $4 more than the week before. He saved a total of $160 after 4 weeks. How much money did he save on the 2nd week?
4 m

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Fred saved some money on the first week. Each following week, he managed to save $4 more than the week before. He saved a total of $160 after 4 weeks. How much money did he save on the 2nd week?