Subjects

At the beginning of the year, all ninth-grade students chose one of three elective subjects. Exactly half of all students chose English concentration. One-third of all students chose math exercises and the remaining 7 students chose science seminar. What is the total number of ninth grade students?

Correct answer:

n =  42

Step-by-step explanation:


n/2 + n/3 + 7 = n

n = 42


n = 42/1 = 42

n = 42

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