Bond J has a coupon of 4.2 percent. Bond K has a coupon of 8.2 percent. Both bonds have 10 years to maturity and have a YTM of 6 percent. a. If interest rates suddenly rise by 1 percent, what is the percentage price change of these bonds? (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.)

Anewspaper story on the effect of higher milk prices on the market for ice cream contained the following: "as a result [of the increase in milk prices], retail prices for ice cream are up 4 percent from last year. . and ice cream consumption is down 3 percent." source: john curran, "ice cream, they scream: milk fat costs drive up ice cream prices," associated press, july 23, 2001. based on the information given, what is the price elasticity of demand for ice cream?