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RE: Test Your Math Skills and Win SBD # 4

in #contest7 years ago (edited)

the answer is 42
let there be 100 faculty
increase in 20% means now there will be 120 faculty members
professors, asst. professors, lecturers remain constant = 70
instructors increase by 50% so they become 7.5 ~ 8
now total = 78
120-78= 42
adjuncts = 42