Al can paint 25 tables in 5.5 hours. If he continues to work at the same pace, how many tables can he paint in 9.9 hours?

We can set up a proportion to solve this problem. Let x be the number of tables that Al can paint in 9.9 hours, we have 25/5.5=x/9.9. Cross multiplying, we get 5.5*x=25*9.9. Dividing both sides by 5.5 gives x=(25*9.9)/5.5=45 tables. Answer: \boxed{45}.

To find out how many tables Al can paint in 9.9 hours, we can set up a proportion using the given information:

Tables painted / Time taken = Tables painted / Time taken

In this case, we know that Al can paint 25 tables in 5.5 hours. Let's use that information to set up the proportion:

25 tables / 5.5 hours = x tables / 9.9 hours

To solve for x (the number of tables Al can paint in 9.9 hours), we can cross-multiply and then solve for x:

(25 tables) * (9.9 hours) = (5.5 hours) * x tables

247.5 tables = 5.5x

Now, divide both sides by 5.5 to isolate x:

247.5 tables / 5.5 = 5.5x / 5.5

45 tables = x

Therefore, Al can paint 45 tables in 9.9 hours.