Final answer:
The simple discount rate can the purchaser expect to earn is 6%. Option b is correct.
Step-by-step explanation:
Given: Face Value ( FV) = $2000 
Selling Price (SP) = $2030 
Time to Maturity (T) = 175 days 
Days Passed (D) = 60 days 
Calculate the discount: 
Discount = Face Value − Selling Price 
 \text{Discount} = $2000 - $2030 = -$30 
Now, substitute the values into the formula: 

Calculate the time to maturity: 
Time to Maturity = 175 − 60 = 115 
Now, substitute this into the formula: 

Simple Discount Rate≈−0.219×3.174×100 
Simple Discount Rate≈−6.946
So, the purchaser can expect to earn a simple discount rate of approximately 6.946%. Since discount rates are usually positive, the correct answer is: 6%. Option b is correct.