Problema Solution

At age 20​, someone sets up an IRA​ (individual retirement​ account) with an APR of 8​%. At the end of each month he deposits ​$35 in the account. How much will the IRA contain when he retires at age​ 65? Compare that amount to the total deposits made over the time period.

Answer provided by our tutors

You save for 65 - 20 = 45 years, so the value of the IRA is:

A = 35 *[((1 + 0.08/12)^(12*45) − 1)/(0.08/12)]

........

click here to see the calculation for A

........

A = $184,608.90

Since you deposit $35 each month for the 45 years, your will have deposited a total of $35 × 12 × 45 = $18,900.00 or around one tenth of the final value of IRA.