There are 24 student's in a science class. Mr. Sato will give each pair of student's 3 magnets. So far, Mr. Sato has given 9 pairs of students their 3 magnets. How many more magnets does Mr. Sato need zo.that each pair of student's habe exactly 3 magnets?
2 students equal a pair, 9 pairs equal 18 students, which leave 6 students left. that remains 3 pairs, which need 3 magnets each pair. (3*3=9) Mr. Sato needs 9 magnets.
