is 18. A. Find the missing base. 1. 15% of 2. 16 is 32% of 3. 464.75 is 55% of 4. 40% of 5. 160 is 25% of is 90. B. Find the rate. Round your answer to the nearest whole number. 1. What percent of 78 is 23.4? 2. 30 is what present of 600? 3. What percent of 580 is 203? 4. 264 is what percent of 480? 5. 78 is what percent of 120?​