Question
Mr. White notices that of the 30 students in his science class, 18 are using yellow pencils, 6 are using blue pencils, 4 are using erasable ink pens,
and 2 are using mechanical pencils. If his class is representative of the student body, and there are 600 students in the school, what is the best prediction of the total number of students that are using erasable pens?
A 80 students
B 120 students
C 100 students
D 300 students
and 2 are using mechanical pencils. If his class is representative of the student body, and there are 600 students in the school, what is the best prediction of the total number of students that are using erasable pens?
A 80 students
B 120 students
C 100 students
D 300 students
Answers
Ms. Sue
4/30 = 0.1333 = 13.33%
0.1333 * 600 = 80 students
0.1333 * 600 = 80 students
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