there are 100 teachers in a school .60 teach science, 25 teach humantities ,15 both are sciecne and humantities.
find the number of who teaches
a) science but not humantities
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Answer:
Total teachers are hundred
Out of hundred 25 teach humanities
15 teaches science and huminities both
Means teachers who teach science are 100-(25+15)=100-40 teachers teach science
=60teachers teach only science
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