Answer:
84 hamburgers were sold on Saturday.
Step-by-step explanation:
x = number of hamburgers sold on Saturday.
Divide 336 by 4, because you need 3 times x, plus x.
You are left with 84.
x = 84
Proof
If you multiply 84 by 3, you get 252.
252 cheeseburgers were sold on Saturday.
Add the number of hamburgers sold on Saturday, 84, to the number of cheeseburgers sold.
252 + 84 = 336.
