Answer:36 burgers were sold.
Step-by-step explanation:
Let x represent the total number of burgers, with or without cheese that was sold.
The total number of burgers with cheese that the fast food sold is 30.
if the ratio burger sold with cheese compared to without cheese was
5 : 1 , the total ratio would be the sum of both proportions. It becomes
5 + 1 = 6
Therefore
5/6 × x = 30
5x/6 = 30
Cross multiplying by 6, it becomes
5x = 30 × 6 = 180
x = 180/5 = 36
Therefore, the number of burgers without cheese sold would be
36 - 30 = 6
