Question
Pierre saved some money on the first week. Each following week, he managed to save $8 more than the week before. He saved a total of $220 after 4 weeks. How much money did he save on the 3rd week?
4 m

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Pierre saved some money on the first week. Each following week, he managed to save $8 more than the week before. He saved a total of $220 after 4 weeks. How much money did he save on the 3rd week?