math

Yvonne put $4,000 in a savings account. At the end of 3 years, the account had earned $960 in simple interest.

A. how much does she have in her account at the end of 3 years?

B. at what annual simple interest rate did the account grow?

c. how many more dollars would she have in her account if the interest rate were 1% greater?

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  1. Help NOW PLEASEEEE

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  2. amount at end of 3 years = 4000+960 = ...

    I = PRT
    960 = 4000(R)(3)
    R = 960/12000 = .08 or 8%

    had the interest been 9%
    I = 4000(.09)(3) = 1080

    take over

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  3. I found this on a website called Brainly and I think it is very helpful:

    A) At the end of 3 years the amount in the account = Principal + Interest

    Amount = 4000 + 960 = 4960

    Amount at the end of 3 years = $4960

    b) Formula for Rate , R = 100I/(PT)

    Where I = Interest = 960, P = Principal = 4000, T= Time = 3 years

    R = (100 ร— 960) / ( 4000 ร— 3)

    R = 8

    Rate, R = 8% per annum.

    c) If the rate was 1% more, R = 8 + 1 = 9% per annum

    Interest, I = PRT/100

    Interest, I = 4000 ร— 9 ร— 3 /100 = 1080

    Amount in her account would have been = $4000 + $1080 = $5080

    Amount more = $5080 - $4960 = $120

    She would have had $120 more should the rate were 1% greater.

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  4. Thank You Anonymous

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  5. i meant bishop i like chess

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  6. Thank youz ๐Ÿ˜Š๐Ÿ˜Š

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  7. this question do be messin wit my brain doe

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  8. yes

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  9. tysm

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  10. Omg tysm!

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  11. Thank you so much Anonymous! I understand this so much now!

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  12. Thanks, was having trouble with the formula. Now I understand how to calculate simple interest :)

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  13. Yall should be careful what you say because you can easily get caught for plagiarism

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  14. well they didn't say it was there's

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  15. theirs*

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  16. hay papi

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