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Find the amount invested at each rate.

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A person invested $7200 for 1 year, part at 4%, part at 10%, and the remainder at 15%. The total annual income from these investments was $863. The amount of money invested at 15% was $1400 more than the amounts invested at 4% and 10% combined. Find the amount invested at each rate.

The person invested $__ at 4%, $__ at 10%, and $__ at 15%.

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A person invested $7200 for 1 year, part at 4%, part at 10%, and the remainder at 15%. The total annual income from these investments was $863. The amount of money invested at 15% was $1400 more than the amounts invested at 4% and 10% combined. Find the amount invested at each rate.

Solution --

Let the amount invested at 4% be x, amount at 10% be y, then the amount ...

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