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Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is 
15% off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional 
5% off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.
Choose 1 answer:
(A) 
81%
(B) 
85%
(c) 
95%
(D) 
105%

Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is 15% 15 \% off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional 5% 5 \% off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.\newlineChoose 11 answer:\newline(A) 81% 81 \% \newline(B) 85% 85 \% \newline(C) 95% 95 \% \newline(D) 105% 105 \%

Full solution

Q. Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is 15% 15 \% off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional 5% 5 \% off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.\newlineChoose 11 answer:\newline(A) 81% 81 \% \newline(B) 85% 85 \% \newline(C) 95% 95 \% \newline(D) 105% 105 \%
  1. Calculate Percentage Tuesday Discount: Calculate the percentage of the original price that Fabrizzio pays on Tuesday after the 15%15\% discount.\newlineThe formula for the sale price after a discount is: Sale Price == Original Price ×\times (1(1 - Discount Percentage)).\newlineFor Tuesday, the discount percentage is 15%15\%, or 0.150.15 as a decimal.\newlineSo, the percentage of the original price he pays on Tuesday is 10.15=0.851 - 0.15 = 0.85 or 85%85\%.
  2. Calculate Effective Discount Wednesday: Calculate the effective discount on Wednesday.\newlineOn Wednesday, there is an additional 5%5\% discount on the already reduced price. The additional discount is 5%5\%, or 0.050.05 as a decimal.\newlineThe effective discount on Wednesday is not simply 15%+5%=20%15\% + 5\% = 20\%, because the second discount is applied to the reduced price, not the original price.
  3. Calculate Percentage Wednesday Discount: Calculate the percentage of the reduced price that Fabrizzio pays on Wednesday after the additional 5%5\% discount.\newlineThe formula for the additional discount on Wednesday is: Wednesday Price == Tuesday Price ×(1\times (1 - Additional Discount Percentage)).\newlineThe percentage of the Tuesday price he pays on Wednesday is 10.05=0.951 - 0.05 = 0.95 or 95%95\%.
  4. Calculate Overall Percentage: Calculate the overall percentage of the original price that Fabrizzio pays after both discounts.\newlineTo find the overall percentage, we multiply the percentages from Step 11 and Step 33.\newlineOverall Percentage = 85%85\% (Tuesday's price as a percentage of the original price) ×\times 95%95\% (Wednesday's price as a percentage of Tuesday's price).\newlineConvert these percentages to decimals for the calculation: 0.85×0.950.85 \times 0.95.
  5. Perform Calculation Overall Percentage: Perform the calculation to find the overall percentage.\newlineOverall Percentage = 0.85×0.95=0.80750.85 \times 0.95 = 0.8075.\newlineConvert this decimal back to a percentage by multiplying by 100100: 0.8075×100=80.75%0.8075 \times 100 = 80.75\%.\newlineRound to the nearest whole percent: 81%81\%.
  6. Choose Correct Answer: Choose the correct answer from the options provided.\newlineThe correct answer is (A) 81%81\%, as this is the rounded percentage of the original price that Wednesday's sale price would be.