Noah gave the delivery person `\$20` to pay for his meal, including a tip. What percentage of the price before tax did he tip the delivery person?

no idea. what was the price of the food?

what was the tax rate?

To find the percentage of the price before tax that Noah tipped the delivery person, we need to know the price of the meal before tax.

To determine the percentage of the price before tax Noah tipped the delivery person, we need to follow these steps:

Step 1: Find the total price before tax.
Since Noah gave the delivery person `\$20` to cover the meal and the tip, this amount includes both. We need to subtract the tip from the total amount to find the price before tax.

Step 2: Calculate the tip amount.
As we know, Noah gave `\$20` to the delivery person to cover the meal and the tip. But we are trying to find out what percentage of the meal price was tipped. So, we need to subtract the price of the meal from the total amount to find the tip amount.

Step 3: Calculate the percentage.
To find the percentage, we divide the tip amount by the price before tax. Then, we multiply the result by 100 to get the percentage.

Let's assume the price before tax is `\$x`.

Step 1: Total price before tax = Total amount - Tip amount = `\$20 - Tip amount`

Step 2: Tip amount = Total amount - Price before tax = `\$20 - \$x`

Step 3: Percentage = (Tip amount / Price before tax) * 100 = (`\$20 - \$x` / `\$x`) * 100

By performing the calculations, you can find the exact percentage of the price before tax that Noah tipped the delivery person.