2. Tere were some teachers and pupils in a school hall. 10% of the people we teachers, 40% were boys and the remaining 920 people were girls. Dring a break, some teachers left the hall and the remaining teachers made up 8% of the remaining people in the hall. How many teachers left the hall during the break?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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2. Tere were some teachers and pupils in a school hall. 10% of the people
we teachers, 40% were boys and the remaining 920 people were girls.
Dring a break, some teachers left the hall and the remaining teachers
made up 8% of the remaining people in the hall. How many teachers left
the hall during the break?
100%-10%
40% = 50%
50% 120
Transcribed Image Text:2. Tere were some teachers and pupils in a school hall. 10% of the people we teachers, 40% were boys and the remaining 920 people were girls. Dring a break, some teachers left the hall and the remaining teachers made up 8% of the remaining people in the hall. How many teachers left the hall during the break? 100%-10% 40% = 50% 50% 120
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