There are 24 students in a science class .mr sato will give each pair of students 3 magnets .so far, mr sato has given 9 pair of students their 3 magnets. how many more magnets does mr sato need so that each pair of students has exactly 3 magnets? pls solve and explain how did you found your thing if you answer this i will mark you as a brainliest so hurry