If */2 + 4 = 12, then the value of a is​

a=16 is your correct answer.

Hope it helps!!!

No , the student is wrong because 50 out of 400 equals 8. And if it would be more than 50 out of 400 it would be more than 8 students that have traveled outside the United States .The correct answer would be less than 50 students have traveled outside the United States.