Solved on Feb 08, 2024

Find the future cost of a CD after 12 years, given an inflation rate of 4.5%4.5 \% and a present cost of $12.95\$ 12.95. Round the answer to the nearest cent.

STEP 1

Assumptions
1. The present cost of the CD is $12.95.
2. The annual inflation rate is 4.5%.
3. The time period for calculating the future cost is 12 years.
4. The inflation rate is compounded annually.

STEP 2

To find the future cost of the CD, we need to use the formula for compound interest, which is also applicable for calculating the effects of inflation on cost.
FutureCost=PresentCost×(1+InflationRate)NumberofYearsFuture\, Cost = Present\, Cost \times (1 + Inflation\, Rate)^{Number\, of\, Years}

STEP 3

Convert the inflation rate from a percentage to a decimal.
4.5%=0.0454.5\% = 0.045

STEP 4

Plug in the values for the present cost, inflation rate, and number of years into the formula.
FutureCost=$12.95×(1+0.045)12Future\, Cost = \$12.95 \times (1 + 0.045)^{12}

STEP 5

Calculate the value inside the parentheses.
1+0.045=1.0451 + 0.045 = 1.045

STEP 6

Now raise this value to the power of 12 to account for the compounding over 12 years.
(1.045)12(1.045)^{12}

STEP 7

Calculate the value of (1.045)12(1.045)^{12} using a calculator.
(1.045)121.7341(1.045)^{12} \approx 1.7341

STEP 8

Now multiply the present cost of the CD by the calculated value to find the future cost.
FutureCost=$12.95×1.7341Future\, Cost = \$12.95 \times 1.7341

STEP 9

Calculate the future cost.
FutureCost$12.95×1.7341$22.456795Future\, Cost \approx \$12.95 \times 1.7341 \approx \$22.456795

STEP 10

Round the answer to the nearest cent.
FutureCost$22.46Future\, Cost \approx \$22.46
The cost of the CD in 12 years, assuming an inflation rate of 4.5%4.5\%, if its present cost is $12.95\$12.95, will be approximately $22.46\$22.46.

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