A 6.75 percent coupon bond with 13 years left to maturity can be called in two years. The call premium is one year of coupon payments. It is offered for sale at $919.75. What is the yield to call of the bond? Assume interest payments are paid semi-annually and par value is $1,000.

Acompany manufactures x units of product a and y units of product b, on two machines, i and ii. it has been determined that the company will realize a profit of $3 on each unit of product a and $4 on each unit of product b. to manufacture a unit of product a requires 7 min on machine i and 5 min on machine ii. to manufacture a unit of product b requires 8 min on mchine i and 5 min on machine ii. there are 175 min available on machine i and 125 min available on machine ii in each work shift. how many units of a product should be produced in each shift to maximize the company's profit p?