## Task 3 - 110523

In 1970, 216 students from a high school participated in the mathematics competition of the student magazine "alpha". This was three times as many as in 1969.

In 1969, there were twice as many participants in the alpha competition at the same school as in 1968.

Calculate the number of all students of this high school who participated in the alpha competition in the years 1968 and 1969!
As there were three times as many participants in 1970 as in 1969, one must divide the number 216 of participants from 1970 by 3 to obtain the number of participants from 1969.

This was $216: 3=72$ thus 72.

As there were twice as many participants in 1969 as in 1968, one must divide the number 72 of participants from 1969 by 2 to obtain the number of participants from 1968.

This was $72: 2=36$ thus 36.

Solution taken from $[5]$