1. Determine the percentage of shirts that remained unsold: 100% - 35% = 65%. 2. Calculate the number of unsold shirts: 65% of 800. 3. Convert the percentage to a decimal: 65% = 0.65. 4. Multiply the total number of shirts by the decimal: 0.65 * 800 = 520. Why others are wrong: A — This is the number of shirts *sold* (35% of 800 = 280), not unsold. C — This would be the number of shirts remaining if 40% were sold (800 - (0.40 * 800) = 480), or if 60% remained, indicating an error in calculating the unsold percentage. D — This results from incorrectly subtracting the percentage number directly from the total (800 - 35 = 765), treating 35% as 35 units.

Calculate the discount amount: 25% of $160. 25% can be written as 0.25 in decimal form. Discount = 0.25 * $160 = $40. Subtract the discount from the original price to find the final price. Final Price = Original Price - Discount = $160 - $40 = $120. Why others are wrong: B — This is the discount amount, not the final price after the discount. C — This would be the result if the percentage symbol was ignored, and $25 was subtracted directly from $160. D — This would be the result if the discount amount was incorrectly added to the original price.

To find the percentage of the target achieved, divide the actual sales by the sales target and multiply by 100%. Actual Sales = $108,000 Sales Target = $120,000 Percentage achieved = (Actual Sales / Sales Target) × 100% Percentage achieved = ($108,000 / $120,000) × 100% Percentage achieved = (108 / 120) × 100% Percentage achieved = 0.9 × 100% Percentage achieved = 90% Why others are wrong: A — Incorrect calculation, possibly due to a mathematical error in division. C — Incorrect calculation, possibly due to a mathematical error in division. D — Incorrect calculation, possibly due to a mathematical error in division.