If a smartphone costs $800 and is on a 20% discount, what is the sale price?

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Question: If a smartphone costs $800 and is on a 20% discount, what is the sale price?

Options:

Correct Answer: $640

Solution:

Sale price = Original price - (Discount * Original price) = 800 - (0.20 * 800) = 800 - 160 = $640.

If a smartphone costs $800 and is on a 20% discount, what is the sale price?

If a smartphone costs $800 and is on a 20% discount, what is the sale price?

Step 1: Identify the original price of the smartphone, which is $800.
Step 2: Identify the discount percentage, which is 20%.
Step 3: Convert the discount percentage into a decimal by dividing by 100. So, 20% becomes 0.20.
Step 4: Calculate the amount of the discount by multiplying the original price by the decimal discount. This is 0.20 * 800.
Step 5: Calculate the discount amount, which is 0.20 * 800 = $160.
Step 6: Subtract the discount amount from the original price to find the sale price. This is 800 - 160.
Step 7: Calculate the sale price, which is 800 - 160 = $640.

Percentage Calculation – Understanding how to calculate a percentage of a number and apply it to find a discount.
Basic Arithmetic – Performing subtraction and multiplication correctly to arrive at the final sale price.