1. **State the problem:** We need to find the percentage of schools charging a monthly fee below 150. 2. **Identify the data:** The number of schools for each fee category is: - 30: 5 schools - 60: 12 schools - 90: 14 schools - 120: 18 schools - 150: 10 schools - 180: 9 schools - 210: 4 schools 3. **Calculate total number of schools:** $$\text{Total} = 5 + 12 + 14 + 18 + 10 + 9 + 4 = 72$$ 4. **Calculate number of schools charging below 150:** This includes fees at 30, 60, 90, and 120. $$\text{Below 150} = 5 + 12 + 14 + 18 = 49$$ 5. **Calculate percentage:** $$\text{Percentage} = \frac{\text{Below 150}}{\text{Total}} \times 100 = \frac{49}{72} \times 100$$ 6. **Simplify fraction:** $$\frac{49}{72} \approx 0.6805$$ 7. **Final answer:** $$0.6805 \times 100 = 68.05\%$$ So, the percentage of schools charging a monthly fee below 150 is **68.05%**.