Problema Solution
At the begging of the year 27 students signed up for year book. During the year some students left the year book staff and others joined. At the end of the year there were 35 students on staff. If 20 students joined during the year, how many students left the staff
Answer provided by our tutors
let 'x' represent the number that left the staff
35 = 27 - x + 20
35 = 47 - x
x = 47-35 = 12
12 students left the staff during the year