Answer:
They can borrow up to 4,000,000 dollars which, uses all of his savings to pay the closing costs.
Explanation:
The happy couple has 40,000 in savings to cover the closing cost.
The closing cost are 1% of the amount the couple can borrow.
mortgage x 1% = closing cost
the largest amount will be if closing cost are 40,000:
mortgage x 1% = 40,000
mortgage = 40,000 / 0.01 = 4,000,000
They can borrow up to 4,000,000 dollars which, uses all of his savings to pay the closing costs.