You have a one-year debt and you need to pay it off the ereganal price for he year was 2,000 dollers but you've waited so long that now it 2,400 dollers. And you have 1,000 doller how much more do you need.

$1400

Step-by-step explanation:

Assuming that you would pay off the debt now and not wait any longer than to calculate how much more money you need you simply need to subtract the $1000 that you have from the total which is $2400.

$2400 - $1000 = $1400

Finally, we can see that you need an extra $1400 in order to finish paying off the debt. Unless you wait more time and the overall debt owed rises some more.

what is the original number? you forgot to add it.