Subway from Baiyun airport to Guangzhou South Railway Station

I will take subway from Baiyun Airport to Guangzhou South Railway station, ie take line 3 then change to Line 2. Can you please advise 1) total fare? 2) usually how long is the trip? (how many minutes do it take)?

How about from Baiyun Airpot to Panyu (Subway Line 3): what is the total fare? and usually how many minutes for the whole trip take?