Final answer:
To make 60 6-ounce burgers, you would need 240 ounces of beef.
Step-by-step explanation:
To find out how much beef is needed to make 60 6-ounce burgers, we can use the unit equivalence of 1 pound = 16 ounces. The recipe calls for 20 four-ounce burgers, which means it requires 20 x 4 = 80 ounces of beef.
To find the amount of beef needed for 60 6-ounce burgers, we can set up a proportion:
20 burgers / 80 ounces = 60 burgers / x ounces
Cross-multiplying, we get 20x = 80 x 60. Solving for x, we find that x = 240.
Therefore, you would need 240 ounces of beef to make 60 6-ounce burgers.