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Mathematics, 25.07.2019 14:30 bvargas786p7aa8y
Abrother and a sister invested part of their $600 of allowance money at 4% and the remainder as 7%. their annual income from these two investments was equivalent to an income of 6% on the entire sum. how much was invested at each rate?
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Abrother and a sister invested part of their $600 of allowance money at 4% and the remainder as 7%....
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