how do i solve this?

On the way to campus in the morning, you purchased a 10-year, 6% coupon bond when rates were 9%. Later in the day, you sold the bond when rates were 8%. What is your 1-day rate of return on this bond investment? Input your answer in decimals, not percent. Answer to 4 decimal places, for example 0.1234. 5 r 0.0722 margin of error +/-0.5%