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A total of $24,000 was invested for one
year, part at 9% and the rest at 12%.
At the end of the year, $2,610 was
collected in interest. How much was
invested at each rate?

Respuesta :

mathstudent55

Answer:

$9000 at 9% and $15000 at 12%

Step-by-step explanation:

x = amount at 9%; y = amount at 12%

x + y = 24000

0.09x + 0.12y = 2610

0.09x + 0.09y = 2160

0.09x + 0.12y = 2610

0.03y = 450

y = 15,000

x + y = 24000

x + 15000 = 24000

x = 9000

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