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AoPS Wiki:Problem of the Day/June 15, 2011

< AoPS Wiki:Problem of the Day
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Jenny decided to go on a routine exercise program. On Monday, she biked $7$ miles. Every day after that, she biked $3$ more miles than she had the previous day. When she finished the program, she had biked a total of $112$ miles. On which day of the week did the program conclude?

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