Question

Carlos uses a food delivery service to order lunch. He paid $13.75 for lunch, which included the cost of the food and a delivery fee, which is 10% of cost of the food. What was the cost of Carlos' lunch before the delivery fee? Enter your answer in the box.

Answer 1

Answer: Let's represent the cost of the food as "x".

We know that the delivery fee is 10% of the cost of the food, so it can be written as 0.1x.

The total cost that Carlos paid for lunch is the sum of the cost of the food and the delivery fee, which is:

Total cost = Cost of food + Delivery fee

$13.75 = x + 0.1x

Simplifying the equation, we get:

$13.75 = 1.1x

Dividing both sides by 1.1, we get:

x = $12.50

Therefore, the cost of Carlos' lunch before the delivery fee was $12.50.

YES 12.50 is correct I am a k12 student and I have proof. the quiz name is 2.09 Quiz: Multistep Percent Problems

Answer 2

$12.50

Explanation:

Let x = the cost of the food without the delivery fee.

The delivery fee can be represented as 0.10x.

Keep in mind that the cost of the food plus the delivery fee equals $13.75.

Therefore, your equation will look like: 13.75 = x + 0.10x

x + 0.1x = 1.10x

So, 13.75 = 1.10x

This means that x = 13.75/1.10

x = 12.5 = $12.50