35. Solve: 0.85 is 25% of what sum? A. 3.4 B. 34 C 21.25 D. 2.125 E. None of these 36. Solve: 36 is what percent of 30? A. 83.3% 8. 90.0% C 120% D. 72% E. None of these 37. Solve: 6 is 15% of what number? A. B. 90 0.9 c. 2.5 40 D. E. None of these 38. The population of Snowtown was 4500 in 1990. In 2020, it had decreased to 3600. Find the percent decrease in population during that 30 year period. A. 80% B. 90% C. 16.2% D. 20% E None of these 39. Sandra's monthly salary is $3,200. If a deduction for taxes from her monthly paycheck is $800, what percent of her salary goes for these deductions? ABCDE A. 45 8 C. 12 D. 50 None of these