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If a book costs Rs. 150 and is on sale for 20% off, what is the sale price? (202

Practice Questions

Q1
If a book costs Rs. 150 and is on sale for 20% off, what is the sale price? (2022)
  1. 120
  2. 130
  3. 140
  4. 150

Questions & Step-by-Step Solutions

If a book costs Rs. 150 and is on sale for 20% off, what is the sale price? (2022)
  • Step 1: Identify the original price of the book, which is Rs. 150.
  • Step 2: Calculate the discount by finding 20% of Rs. 150.
  • Step 3: To find 20%, multiply Rs. 150 by 0.20 (which is the decimal form of 20%).
  • Step 4: The calculation is 150 * 0.20 = Rs. 30. This is the discount amount.
  • Step 5: Subtract the discount from the original price to find the sale price.
  • Step 6: The calculation is 150 - 30 = Rs. 120. This is the sale price.
  • Percentage Calculation – Understanding how to calculate a percentage of a number and apply it to find discounts.
  • Subtraction – Performing basic subtraction to find the final sale price after applying the discount.
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