The following three defense stocks are to be combined into a stock index in January 2013 (perhaps a portfolio manager believes these stocks are an appropriate benchmark for his or her performance):

	Price
	Shares (millions)		1/1/13			1/1/14			1/1/15
Douglas McDonnell	415		$	84		$	89		$	106
Dynamics General	225			23			20			34
International Rockwell	350			52			41			55

a.

Compute the rate of return on an equally weighted index of the three defense stocks for the year ending December 31, 2013. (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.)

Index return

%

b.	If the index value is set to 100 on January 1, 2013, what will the index value be on January 1, 2014? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

Index value

c.	What is the rate of return on the index for 2014? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.)

Index return

%