10 Questions Ratios and Proportions: Percent of a Quantity – MATH Find a percent of a quantity as a rate per 100. Solve problems involving finding the whole, given a part and the percent. If 1,000 mg is 20% of the daily value of Vitamin A, how much is the recommended daily amount? 200 mg 4,000 mg 5,000 mg 1,500 mg 102 is what percent of 120? 85% 100% 18% 90% A t-shirt is normally $18, but is 40% off today. What amount will Tim save if he buys a shirt? $9.00 $7.20 $10.80 $4.00 … and 7 more awesome questions! Check them out by clicking “Play”.