Answer:
a. $880.
Explanation:
Bailey bought a bond for $1,000 that promises to pay $110 a year.
The interest rate was 110/1000 * 100 = 11%
This year, $1,000 receives $125 a year= 125/1000 * 100 = 12.5%. So, this year the interest rate now rises to 12.5%.
If Bailey were to sell his (old) bond, the price should be 110/12.5% = 110/0.125 = $880.