Please so all step, and all equations broken down, even for calculation as simple as, for example, standard deviation:Thanks

1)Considerthe following fixed-income securities making annual payments:

Instrument	Coupon	Maturity	Yield
A	8%	10	10%
B	10%	15	8%

How much of Instrument B is necessary to hedge A? (Hint: the hedge A using Instrument B, you need to structure A and B such that Price Change in A + Price Change in B * Number of Instrument B to be used = 0. You can then relate the price change in A to duration of A.)