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Mathematics, 18.03.2021 02:50 cornpops1749

Last summer, Fred, x, earned $15 per day and Maria, y, earned $20 per day. Together, they earned $1200. Fred worked 10 more days than Maria.

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Last summer, Fred, x, earned $15 per day and Maria, y, earned $20 per day. Together, they earned $12...
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