Mark wants to buy a new car for his wife and agrees with a 1.5-year, $12,000loan. The financial institution quotes this loan at 10.5%, compounded monthly. Sixmonths later, Mark is offered an optional loan from another financial institution. The newloan is quoted at 9.25% and Mark asks that the number of payments be set to 12. A 1%fee will be added to the remaining loan balance for the principal of the new loan.
What was the first loan monthly payment and what is the amount Mark is going to pay for thenew one? Is it a good idea to change?
12000= A*(1-1/(1+10.5%/12)^18)/(10.5%/12)
12000= A*16.58717111
A=12000/16.58717111= 723.450667
Monthly payment= $723.45
= 723.450667*(1-1/(1+10.5%/12)^12/(10.5%/12)
=8207.171109
Principal of the new loan= 8207.171109*101%
= 8289.24282
New monthly payments:
PV of annuity = Annuity*(1-1/(1+rate)^number of terms)/rate
8289.24282= A*(1-1/(1+9.25%/12)^12)/ (9.25%/12)
8289.24282= A*11.4197682
A= 725.8678703
This is not a good arrangement because Mark has to pay higher amount per month for 12 months.
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