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You invested ​$19,000 in two accounts paying 5% and 9% annual​ interest, respectively. If the total interest earned for the year was
$1390, how much was invested at each​ rate?

Respuesta :

darkgameryt077

Answer:

0.08x + 0.09y = 1700,     where x is the amount that has 8% interest

                                               y is the amount that has 9% interest

                              -------equation (1)

x+y = 19000

x = 19000 - y ,         -------equation   (2)

substitute (2) into (1):

0.08(19000 - y) + 0.09y = 1700

1520-0.08y+0.09y = 1700

so, y = 18000

x = 19000-y=1000

(1000,   18000) is the answer    

Just to let you know I’m in 7th grade

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