10. Determine the discount points necessary to provide a yield-to-maturity of 10 percent for the following mortgages with 30-year maturities.

Mortgage	Monthly Payment ($)	Coupon rate (%)	Amount at Origination ($)	Discount points ($)
A	$800	N/A	100,000
B	900	N/A	110,000
C	950	N/A	125,000
D	700	N/A	110,000

The correct answers are below, I just need to see the work to getting those answers

a.

$8,840 or 8.84%

b.

$7,444 or 6.76%

c.

$16,747 or 13.39%

d.

27.49%