#Interest question that is giving me a pain

33 messages · Page 1 of 1 (latest)

iron igloo
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William bought himself a bike for $ 3000 (taxes included). The promotion offers 0% interest financing over 24 months. The amount of the bike is divided into 24 equal payments. At the same time, he found another banking institution that offered a placement rate of 6% per year capitalized monthly. So, he decides to invest a sum of money that should, from the following month, allow him to pay each of the monthly payments of his bike. How much does he have to invest in order to have the necessary money to pay for this bike?

karmic scaffold
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For 24 months

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That means we can divide the amount into 24 parts

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Monthly payment amount = 3000/24 = 125 dollars

iron igloo
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which formula are u using right now

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Interest component

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?

karmic scaffold
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So with the another case, I see there's a series of monthly investments

karmic scaffold
iron igloo
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alright

karmic scaffold
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Now we can use a formula
monthly interest rate = annual interest rate/number of compounding periods per year

iron igloo
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aight

karmic scaffold
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Monthly interest rate is 6% and the no. of compounding periods per year is 12 (because 12 months)

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So monthly interest rate = 0.005

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Now there's a formula which i need to check, just hold on

iron igloo
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don't u need to put a +1 in there or sum

karmic scaffold
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Just hold on

iron igloo
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alr

karmic scaffold
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Got it

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The formula is
future value = monthly payment amount * (1 + monthly interest rate)^number of months

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We just calculated monthly interest rate above

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The monthly payment amount is 125 dollars

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And the number of months are 24

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So

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,calc 125*(1+0.005)^24

scenic brookBOT
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Result:

140.89497202567
iron igloo
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i'll try to solve the others by myself