Answer:
There is a 18.18% discount if a combo meal is purchased.
Step-by-step explanation:
Here, according to the question:
The cost of 1 large drink = $3
The cost of 1 order of fries = $4
The cost of 1 hot dog = $4
Now, the combined cost of all items if purchased individually
= Price of { 1 large drink + 1 fries+ 1 hot dog} = { $3 + $4 + $4} = ($11)
Also, the price of all 3 food if a meal is purchased = $9
So, the difference in the Price of meal and total food cost
= $11 - $ 9 = $2
⇒ There is $2 DISCOUNT of a meal is purchased then buying items individually.

Hence, there is a 18.18%discount if a combo meal is purchased.