Make workbooks for a tutoring center

We are a tutoring center located in Sydney. We are hiring someone who is good understandingh of high school Maths and Science. Job is to create workbooks that we provide every week to students based on the topics that we provide. There are around 10 chapters for year 7 and for year 9 and about 16 for year 11. We will send you the textbooks so you know what the content is. You need to extract high quality challenging questions from the internet, CBSE books and other sources and format them in the workbook. Each topic will have 2 to 5 workbooks depending on the length and subtopics. 2 copies of the workbook need to be made - one with the solutions while the other withour solutions and space for students to work their answers out.