Answer:Here's how to calculate the rate of discount: 1. Find the discount amount as a fraction of the original price: - Discount amount / Original price = ₱500 / ₱4500 = 1/9 2. Convert the fraction to a percentage: - (1/9) * 100% = 11.11% (approximately) Therefore, the rate of discount given to Cris was approximately 11.11%.