Wally Bee purchased a new home for $250,000 with a $40,000 down payment. He financed the remainder with a 4% mortgage for 30 years.

If Wally had originally planned on using a 15 year mortgage (also at 4%), how much would Wally save in interest expense compared to the 30 year mortgage?

		$72,658
		$63,564
		$67,344
		$81,308