The pie chart below shows the average words per minute someone can type. If the total number of people surveyed is 10000, approximately how many of them type 45 words per minute or less?

According to the Pie Chart, the number of people who type 45 words per minute or less, covers approximately half of the chart. Hence:
People type 45 words per minute or less ≈ 45%.
45% of 10000 = 4500
ANSWER
4500