Answer:
10 minutes 40 seconds
Explanation:
Let's get this in the form of "so much time to eat 1 burger."
2 minutes to eat 3/4 of a burger means:
2 minutes ÷ 3/4 burger, which is the same as:
2 x 4/3 = 8/3 minutes to eat one burger
(Simplifies to 2 2/3 minute per burger, but let's leave it as 8/3 for now.)
So now just multiply that by 4 burgers:
4 x 8/3 = 32/3 = 10 2/3 minutes = 10 min 40 sec