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A mother wants to invest 7,000.00 for her son's future education. She invests a portion of the money in a bank certificate of deposit (CD account, which eams 4% and the remainder na savings bond that came 7%. If the total interest earned
her one year is $420.00. how much money was invested in the Concount?
The total interest eamed after one year is $420.00
How much money was invested in the CD account? [7
(Round to the nearest cont, if necessary)
90
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Respuesta :

The amount invested in the CD is $2,333.33.

The system of equations

a + b = 7000 equation 1

0.04a + 0.07b = 420 equation 2

Where:

a = amount invested in the CD

b = amount invested in the savings bond

How much was invested in the CD?

In order to determine the required value, take the following steps:

Multiply equation 1 by 0.07

0.07a + 0.07b = 490 equation 3

Subtract equation 2 from 3

0.03a = 70

Divide both sides by 0.03

a = $2,333.33

To learn more about simultaneous equations, please check: https://brainly.com/question/25875552