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 1/20 pounds of bacon for every 2 tomatoes used and 5 tomatoes for every full head of lettuce used.

If Omar is making enough BLT sandwiches to use 2 full heads of lettuce, then he is going to use_____
pounds of bacon and will make a total of ______
BLT sandwiches.

To make 2 full heads of lettuce, Omar needs to use 2 * 5 = <<2*5=10>>10 tomatoes.

To make 10 tomatoes, Omar will need to use 10 / 2 = <<10/2=5>>5 1 1/20 pound of bacon.
To make 1 1/20 pounds of bacon, Omar needs to make 1 1/20 * 4 = <<1+1/20*4=5 1/5>>5 1/5 BLT sandwiches.
To make 5 1/5 BLT sandwiches, Omar will need to use 5 1/5 * 3/4 = <<5+1/5*3/4=4>>4 pounds of bacon. Answer: \boxed{4}.