Answer:
wrap-around loan
Explanation:
Based on the scenario being described within the question it can be said that the type of loan being described is known as a wrap-around loan. This is a loan in which the initial home morgage amount is added to an incremental amount that when summed makes up the total amount that the house is being sold for and which the buyer will need to pay the seller in a given period of time. Which in this type of loan the lender provides the money for this payment.