Given:
20$
DVD cost = 32$
Friend’s loan = 12$ (since he loaned you enough money to be able to pay for the DVD)
Find:
available funds after you buy the DVD = ?
Solution:
First, we add your current funds with the money your friend loaned you:
20$ + 12 $ (we will assume this amount since the problem states that he loaned
you just enough money to pay for the DVD) = 32$
Next, we subtract the total amount of the DVD cost to the
total amount of money you have right now:
$32 (DVD cost) - $32 (your total funds) = $0
Therefore, your available funds after buying the DVD is $0. But if we will take into consideration the amount you loaned from your friend by subtracting it to your remaining funds, then you’ll have $0 - $12 = $-12, which is your debt.