Compound Interest Calculation: Chen's RRSP Deposit Account

How much is in Chen's RRSP deposit account on September 1, 2016?

Chen opened an RRSP deposit account on December 1, 2008, with a deposit of $2300. He added $2300 on August 1, 2010, and $2300 on December 1, 2012. Given that the deposit earns 6.8% p.a compounded monthly, what is the total amount in his account on September 1, 2016?

Answer:

The amount in Chen's RRSP deposit account on September 1, 2016, is approximately $3816.02.

To calculate the amount in Chen's RRSP deposit account on September 1, 2016, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A = Final amount

P = Principal (initial deposit)

r = Annual interest rate (in decimal form)

n = Number of times interest is compounded per year

t = Number of years

Given:

Principal (P) = $2300

Annual interest rate (r) = 6.8% = 0.068 (in decimal form)

Interest is compounded monthly, so n = 12 (12 times per year)

t = 2016 - 2008 = 8 years (from December 1, 2008, to September 1, 2016)

Using the formula:

A = $2300(1 + 0.068/12)^(12*8)

Calculating the expression inside the parentheses:

(1 + 0.068/12) = 1.00566667 (rounded to 8 decimal places)

Plugging in the values:

A = $2300(1.00566667)^(96)

Calculating the final amount:

A ≈ $2300(1.65892460)

Therefore, the total amount in Chen's RRSP deposit account on September 1, 2016, is approximately $3816.02.

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