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Kiran deposits 
$380 every month into an account earning a monthly interest rate of 
0.35%. How much would he have in the account after 7 years, to the nearest dollar? Use the following formula to determine your answer.

A=d(((1+i)^(n)-1)/(i))

A= the future value of the account after 
n periods

d= the amount invested at the end of each period

i= the interest rate per period

n= the number of periods
Answer:

Kiran deposits $380 \$ 380 every month into an account earning a monthly interest rate of 0.35% 0.35 \% . How much would he have in the account after 77 years, to the nearest dollar? Use the following formula to determine your answer.\newlineA=d((1+i)n1i) A=d\left(\frac{(1+i)^{n}-1}{i}\right) \newlineA= A= the future value of the account after n n periods\newlined= d= the amount invested at the end of each period\newlinei= i= the interest rate per period\newlinen= n= the number of periods\newlineAnswer:

Full solution

Q. Kiran deposits $380 \$ 380 every month into an account earning a monthly interest rate of 0.35% 0.35 \% . How much would he have in the account after 77 years, to the nearest dollar? Use the following formula to determine your answer.\newlineA=d((1+i)n1i) A=d\left(\frac{(1+i)^{n}-1}{i}\right) \newlineA= A= the future value of the account after n n periods\newlined= d= the amount invested at the end of each period\newlinei= i= the interest rate per period\newlinen= n= the number of periods\newlineAnswer:
  1. Identify variables: Identify the variables from the problem.\newlineWe have:\newlined=$380d = \$380 (the amount invested at the end of each period)\newlinei=0.35%i = 0.35\% per month (the interest rate per period)\newlinen=7 years×12 months/year=84 monthsn = 7 \text{ years} \times 12 \text{ months/year} = 84 \text{ months} (the number of periods)\newlineA=?A = ? (the future value of the account we want to find)
  2. Convert interest rate: Convert the interest rate from a percentage to a decimal. i=0.35%=0.35100=0.0035i = 0.35\% = \frac{0.35}{100} = 0.0035
  3. Calculate future value: Use the formula to calculate the future value of the account. A=d×((1+i)n1i)A = d \times \left(\frac{(1 + i)^{n} - 1}{i}\right)
  4. Plug in values: Plug in the values and calculate the future value.\newlineA=380×((1+0.0035)841)/0.0035A = 380 \times \left(\left(1 + 0.0035\right)^{84} - 1\right) / 0.0035
  5. Calculate exponentiation: Calculate the value inside the parentheses and the exponent.\newline(1+0.0035)84=1.003584(1 + 0.0035)^{84} = 1.0035^{84}
  6. Continue calculation: Calculate the exponentiation. 1.0035841.34851.0035^{84} \approx 1.3485 (rounded to four decimal places for simplicity)
  7. Calculate numerator: Continue with the calculation of AA.A=380×(1.348510.0035)A = 380 \times \left(\frac{1.3485 - 1}{0.0035}\right)
  8. Calculate future value: Calculate the numerator of the fraction.\newline1.34851=0.34851.3485 - 1 = 0.3485
  9. Perform division: Calculate the future value AA.A=380×(0.3485/0.0035)A = 380 \times (0.3485 / 0.0035)
  10. Multiply deposit amount: Perform the division.\newline0.3485/0.003599.57140.3485 / 0.0035 \approx 99.5714
  11. Calculate final amount: Multiply by the monthly deposit amount.\newlineA=380×99.5714A = 380 \times 99.5714
  12. Round final amount: Calculate the final amount. A37837.13A \approx 37837.13
  13. Round final amount: Calculate the final amount.\newlineA37837.13A \approx 37837.13Round the final amount to the nearest dollar.\newlineA$(37837)A \approx \$(37837)

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