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

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

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 × 960) / ( 4000 × 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 × 9 × 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 😊😊

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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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17. aah thanks so much I understand how to do it now

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18. Thank you SO much this makes lots more sense!!

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19. Thanks Anonymous :D

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20. For B, did the acc grow?

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21. this might sound like a question, but does anyone know the formula for finding what the simple interest rate is? i mean percentage wise, how much the money would go up. i don’t know how exactly to describe it but nothing pops up on google. thanks

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22. Thanks Anonymous

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23. SUSS

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