Study the following graph and answer the question based on the graph. What percentage of the total number of teachers are aged less than 45 years?

80% 30% 60% 8%

80%

Total number of teachers = 4 + 5 + 6 + 3 + 2 + 5 = 25 Number of teachers aged less than 45 years = 4 + 5  + 6 + 3 + 2 = 20 Required percentage = \(\frac{20 }{25}\) × 100 = \(\frac{4 }{5}\) × 100 = 80%