Answer the question from the image above with the worked solution

The following is a cumulative frequency diagram for the time , in minutes, taken by 80 students to complete a task. . Write down the median. [1] b. Find the interquartile range. (3] T V ~ X c. Complete the frequency table below. (21 80 (a) (b) 70 60 50 Entregar cumulative frequency 40 T X 30 20 Time Number of 10 (minutes) students 10 20 30 40 50 Ost