You are asked to conduct a survey to ask questions about students favorite subjects at a school having 1000 students. A sample size of 100 students will be selected from the school. Its a fact that the students in different grades will have different subjects and preferences. For the survey to deliver precise results, the ideal manner is to use stratified random sampling.

Heres a table of the number of students in each grade:

Grade	Number of students (n)
5	150
6	250
7	300
8	200
9	100

Describe clearly how you will use a stratified random sampling to decide how many students should be selected from each grade.