E. Find the base. 2. 25% of what number is 25? 1./ 75% of what number is 24? 4. 18 is 36% of what number? 3. 20% of what number is 32? ? 6. 63 is 75% of what number? 5. 9 is 20% of what number? 8. 1 12 is 1-% of what number? 2 7. 17 is 0.21% of what number?​