Question
There are 30 more teachers in School E than in School F. After 20% of the teachers left School E and 50% of teachers left School F, the number of teachers who remained in School E is four times that of the number of teachers in School F. Find the number of teachers in School E at first.
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There are 30 more teachers in School E than in School F. After 20% of the teachers left School E and 50% of teachers left School F, the number of teachers who remained in School E is four times that of the number of teachers in School F. Find the number of teachers in School E at first.