Question

three-fourths of the students in mr. shearer's class have brown hair and six-sevenths of his students are right-handed. if mr. shearer's class has 28 students, what is the smallest possible number of students that could be both right-handed and have brown hair?

Answer 1

Answer: 17

Explanation:

Mr. Shearer has 3/4(28)=21 students with brown hair and 6/7(28)= 24 students who are right-handed. Since there are 28−24=4 left-handed students, at most 4 of the 21 brown-haired students are left-handed. Therefore, at least 17 of them are right-handed.