TOEFL iBT Writing Section

TOEFL iBT Writing Section:
The Writing Section consists of two tasks, one integrated task and one independent task. In the integrated task, students must read an academic passage, listen to an academic passage, and write about how the ideas in the two passages are related. In the independent task, students must write a personal essay.

So,the writing section consists of two different parts:
first, you will be presented one integrated assignment combining reading, listening and writing, taking 20 minutes of time. You can read the assignment in 3 minites, listen two minutes and write about 15 minutes.
Secondly, you will have a separate assignment with a total time of 20 minutes,
resulting in a total of 50 minutes for two assignments in this section of the TOEFL.