Final answer:
To make enough BLT sandwiches with 2 full heads of lettuce, Omar will use 1/2 pound of bacon and make a total of 2 sandwiches.
Step-by-step explanation:
To calculate the amount of bacon needed when making BLT sandwiches, we need to follow the given information:
- 4 sandwiches require 4 pounds of bacon, so each sandwich requires 1 pound of bacon.
- For every 2 tomatoes used, 1/20 pound of bacon is used.
- 2 full heads of lettuce are used, which means 10 tomatoes are used.
Therefore, using the second piece of information, for 10 tomatoes, we need 1/20 x 10 = 1/2 pound of bacon. So, when making enough BLT sandwiches to use 2 full heads of lettuce, Omar will use 1/2 pound of bacon. The total number of sandwiches made would be 10 tomatoes / 5 tomatoes per sandwich = 2 sandwiches.