Time (sec) 20 25 30 35

Words Typed 40 50 x 70
James can type 40 words in 20 seconds. How many words can James type in 30 seconds?

60

25

30

20

To find out how many words James can type in 30 seconds, we can set up a proportion.

Let's call the number of words James can type in 30 seconds x.

The proportion is:

40/20 = x/30

To solve for x, we can cross multiply:

20x = 40 * 30

20x = 1200

Now we divide both sides by 20 to solve for x:

x = 1200/20

x = 60

Therefore, James can type 60 words in 30 seconds.