28. Mary has a coupon for 15% off at a department store. She wants to buy a humidifier that costs $129.95. Which of the following is closest to the amount Mary will save if she buys the humidifier and uses the coupon?
Answer: C
Mary will save approximately $20.00 if she uses the coupon.
The 15% discount on the humidifier priced at $129.95 results in a savings amount that closely approximates $20.00.
A) $15.00
This option is incorrect because a 15% discount on $129.95 yields a savings of more than $15.00. Specifically, 15% of $129.95 is $19.49, which is significantly greater than $15.00.
B) $18.00
This option is also incorrect as it underestimates the total savings. Calculating 15% of $129.95 results in approximately $19.49, which is higher than $18.00, indicating that this choice does not accurately reflect the discount.
C) $20.00
This option is correct. The calculation of 15% off of $129.95 yields a savings of approximately $19.49, which is closest to $20.00. Thus, this option accurately represents the estimated savings from using the coupon.
D) $22.00
This option is incorrect because it overestimates the savings amount. A 15% discount on $129.95 does not reach $22.00, as the calculated savings is approximately $19.49, which is less than this amount.
Conclusion
The correct answer of $20.00 closely approximates the actual savings of approximately $19.49 from the 15% discount. Options A and B underestimate the savings, while D overestimates it, making C the only choice that accurately reflects the discount amount.