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1. Lisa's parents gave her $1000 for her high
school graduation. She put the money into a
savings account that earned 7.5% annual
interest. How much interest will be paid after
nine months?

Can someone explain this to me

Respuesta :

Answer: $56.25

Step-by-step explanation:

Money: $1000

Interest: 7.5% or [tex]\frac{7.5}{100} =0.075[/tex]

There are two steps you can use to find this.

First

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To find the annual interest multiply by the rate.

[tex](1000)(0.075)\\=75[/tex]

We can now find how much that is per month;

[tex]\frac{75}{12} = 6.25[/tex] per month, to find how much that is in 9 months, multiply by 9

[tex]6.25*9=56.25[/tex]

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Second

You know 12 months is 1 year, you divide the amount of months that we're trying to calculate the interest of, by the amount of years in months; in this case, 12.

[tex]\frac{9}{12}=0.75[/tex]

Multiply that by the interest and the total amount.

[tex](0.75)(0.075)(1000)\\= 56.25[/tex]

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Answer:

Step-by-step explanation:

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