Moxie wants to have $5000. How much money does she have to deposit in an account at 6% interest, compounded 3 times per year, in order to have $5000 at the end of 6 years?
Future amount = Present Amount × (1+r)^n
your future amount is 5000 r is the interest rate as a decimal n is the number of periods
can you solve that...? @jacky27
... so your interest rate is 6%... which is 0.06 as a decimal and the number of periods is 3 per year, for 6 years = 3 x 6 = 18 so... \[5000 = deposit \times (1+0.06)^{18}\]
now just solve for deposit
after solving (1+0.06)^18 do you divide by 5000?
no, to get the 1.06^18 to the other side, divide both sides of the equals sign by 1.06^18 this will isolate the deposit, and give u your answer
dammit, hang on, sorry, the interest rate they gave you would most likely be the "annual" interest rate, not the rate every 4 months, the rate you should use in your calculations is more likely to be 0.02, not 0.06... though it dosent specify exactly...
anyway, use 0.02 as r, not 0.06
so it would be (1+0.02)^18 ?
yep which equals approx 1.428, so divide both sides by 1.428 = necessary deposit amount
so what was your final answer...?
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