Percent Crossword puzzle

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Across
  1. 2. the amount of money borrowed or invested, on which interest is calculated
  2. 6. a number or ratio that can be expressed as a fraction of 100
  3. 9. according to a particular relationship in size, amount, or degree.
  4. 13. when one variable changes, increases, or decreases the other will change at a constant rate
  5. 16. difference between an observed value and a theoretical value as a percentage of that theoretical value
  6. 17. a technique used to calculate the proportion of interest paid on a sum over a set time period at a set rate
  7. 18. the price that the buyer pays to buy a product or goods
  8. 19. measures the difference between an observed value and a theoretical value as a percentage of that theoretical value
  9. 20. a comparison between two values expressed in hundredths
Down
  1. 1. purchase price x sales tax rate
  2. 3. determains the cost of asking for a loan or saving money
  3. 4. compares the change between the original price and the reduced price
  4. 5. calculated by multiplying the total amount of the bill by the tip percentage expressed as a decimal
  5. 7. two quantities change at a constant rate relative to each other
  6. 8. The percentage increase over the cost price of an item
  7. 10. the total amount a salesperson receives from sales
  8. 11. a rate for one of something
  9. 12. the price at which a manufacturer or distributor sells a product to a retailer or other reseller
  10. 14. the ratios of their output values to input values are not constant
  11. 15. the difference between the marked price and the selling price of an article