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If a book costs $15 and is on a 20% discount, what is the sale price?

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Question: If a book costs $15 and is on a 20% discount, what is the sale price?

Options:

  1. $12
  2. $10
  3. $13
  4. $11

Correct Answer: $12

Solution: 

20% of $15 is $3. Sale price = $15 - $3 = $12.

If a book costs $15 and is on a 20% discount, what is the sale price?

Practice Questions

Q1
If a book costs $15 and is on a 20% discount, what is the sale price?
  1. $12
  2. $10
  3. $13
  4. $11

Questions & Step-by-Step Solutions

If a book costs $15 and is on a 20% discount, what is the sale price?
  • Step 1: Find out what 20% of $15 is.
  • Step 2: To find 20%, multiply $15 by 0.20 (which is the decimal form of 20%).
  • Step 3: Calculate $15 * 0.20 = $3.
  • Step 4: Now, subtract the discount ($3) from the original price ($15).
  • Step 5: Calculate $15 - $3 = $12.
  • Step 6: The sale price of the book is $12.
  • Percentage Calculation – Understanding how to calculate a percentage of a given amount.
  • Subtraction – Applying subtraction to find the final sale price after discount.
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