Omar owns a sandwich shop, and his best-selling sandwich is the BLT. When making BLT sandwiches, it takes 3/4 of a pound of bacon to make 4 sandwiches. He uses 1/20 pounds of bacon for every 2 tomatoes and 5 tomatoes for every full head of lettuce. If Omar is making enough BLT sandwiches to use 2 full heads of lettuce, then he will use pounds____ of bacon and make a total of____ BLT sandwiches.
To find out how much bacon Omar needs to make 2 full heads of lettuce, we first need to find out how many tomatoes he needs since the number of tomatoes determines the amount of bacon. Since we know Omar uses 5 tomatoes for every full head of lettuce, and he is using 2 full heads of lettuce, he needs 5 * 2 = <<5*2=10>>10 tomatoes.
Since we know Omar uses 1/20 pounds of bacon for every 2 tomatoes, we can use this ratio to find the amount of bacon he needs for 10 tomatoes. We have 10 tomatoes * (1 pound / 20 tomatoes) = 10 / 20 pounds = 0.5 pounds of bacon.
Now that we know Omar uses 0.5 pounds of bacon for 2 full heads of lettuce, we can use this ratio to find out how much bacon he needs for 4 sandwiches, which is 0.5 pounds of bacon * (4 sandwiches / 2 full heads of lettuce) = 0.5 pounds of bacon * 2 = 1 pound of bacon.
Therefore, Omar will use 1 pound of bacon and make a total of 4 sandwiches. Answer: \boxed{1 \text{ pound}}, \boxed{4}.