Data was collected on a student’s typing rate and graph was drawn as shown below. Approximately how many words had this student typed in 30 seconds?

The time taken is denoted on x axis and the number of words types are on y axis. To calculate words types in 30 seconds. We look for the point on the line graph which corresponds 30 on the x axis and from that point on the graph, draw perpendicular on y axis to find the number of words typed. The Answer comes out to be approximately 28 words in 30seconds.