March. 30				April. 31
Stock	Share Price $	# of Shares	Market Value $	Share Price $	# of Shares	Market Value $
A	25	300	7500	41	300
B	35	200	7000	61	200
C	45	100	4500	71	100
Total

Calculate price-weighted and cap-weighted index, assume initial index as 100.

Which index is more useful and why?