Answer: 4.51%
Step-by-step explanation:
The formula that'll be used for the calculation of the yield will be:
= (SP - PP)/PP × 365/n
where,
SP = Selling price = $9100
PP = Purchase price = $9000
n = Number of days = 90
= (9100 - 9000)/9000 × 365/90
= 100/9000 × 365/90
= 0.04506
= 4.51%
The yield is 4.51%