The answer is 3/4 and yes it really works
Answer:
37.5%
Explanation:
The percentage change in the price of a jar of peanut butter, using the midpoint method, is:

The percentage change in sales of jelly is 15%.
The cross elasticity of demand between peanut butter and jelly is:

The cross elasticity of demand is 37.5%
Answer: 2%
Explanation:
As the coupon payments are semi-annual, you need to convert the other measures to semi-annual measures as well.
Coupon rate = 6%/2 = 3% per semi annum
Coupon payment = 3% * 1,000 which is par value = $30
Time to maturity = 12 * 2 = 24 semi annual periods
Price is still the same = $1,189.14
You can use an Excel worksheet to solve for the Yield:
Number of periods = 24
Payment = $30
PV = 1,189.14
FV is par value of $1,000
Periodic rate is 0.019999
= 2%
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✓ D.
B I believe this is the right answer