If James can type 40 words in 20 seconds, his typing rate is 40 words/20 seconds = <<40/20=2>>2 words/second.
Therefore, he can type 2 words/second * 30 seconds = <<2*30=60>>60 words in 30 seconds. Answer: \boxed{60}.
James can type 40 words in 20 seconds. How many words can James type in 30 seconds?
1 answer