Hi
Here is how I would solve this question...it's actually quite simple
Monthly payment for Payment option 1:
First of all we want to find the amount we are paying for the car:
The total price of the car - $1000 down payment
= $16000 - $1000
= $15000
Now, $15000 is the amount you will be paying over the period of 60 months,so each month you will pay:
$15000/ 60 = $250
Therefore, the monthly payment for payment option 1 is $250.
Now the monthly payment for payment option 2:
The formula for Simple annual interest is: Principal * Rate* Time
Therefore the interest you have to pay in 72 months( 6 years ) is:
16000 * 2%* 6
= 16000 * .02 * 6
= 1920 dollars
So, the total amount you will be paying in 6 years is:
$16000 + $ 1920
= 17920 dollars
Therefore every month you will have to pay:
$17920/72= 248.88 or 249 dollars
For payment option 1 you will have to pay $250 dollars per month and for option 2 you have to pay 249 dollars per month. Therefore, the payment option 2 will be cheaper and the payment is lower.
**** NOTE **** Did you notice that even though you are paying less each month for payment 2, you are actually paying more in total? This is because you are the paying the monthly amount in payment option 2 for a longer period of time. In payment option 1, you are paying more each month, but in total you end up saving $2920 dollars. So if this was in real life, I would go with payment option 1.
Hope I helped, good luck !