Answer:
Missing word<em> "and the cost of one point at the time of closing"</em>
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Down payment = $260,000*15%
Down payment = $260,000*0.15
Down payment = $39,000
Amount of mortgage = $260,000 - $39,000
Amount of mortgage = $221,000
Cost of 3 point at the time of closing = 3% of amount of mortgage
Cost of 3 point at the time of closing = 3% * $221,000
Cost of 3 point at the time of closing = $6,630