Answer:Here's how to calculate Fred's incentive as a percentage of his total sales: 1. Set up a fraction: - Incentive / Total Sales = PHP 500 / PHP 8000 2. Simplify the fraction: - This fraction simplifies to 1/16 3. Convert the fraction to a percentage: - Divide the numerator (1) by the denominator (16): 1 / 16 = 0.0625- Multiply the result by 100%: 0.0625 * 100% = 6.25% Therefore, Fred's incentive is 6.25% of his total sales.