Answer:
$ 840
Step-by-step explanation:
The seller pays annual property tax $ 960 on January 15. So, his tax per month is $960/12 = $80/month. For a 30 day month,is tax per day is $80/30 $ 8/3 = $ 2²/₃. We have 45 days from January 15 to March 1. (Feb -1 month and 15 days from 16th to 30th January ).
So, the tax paid for Feb = $80/ month × 1 month = $ 80.
Tax paid for the 15 days before March 1 = $ 8/3 per day × 15 days = $ 40. So the total tax paid from January 15 to March 1 = $ 80 + $ 40 = $120 which is the tax used up by seller.
So, seller's credit = total annual tax - tax used up by seller = $ 960 - $ 120 = $ 840