During a recent flu epidemic, two-fifths of the students minus 51 students in a school were absent. Three-sevenths plus 147 pupils were present.
a) How many students study in the school?
b) How many students were present?
c) How many students were absent?
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Answer: 560
Step-by-step explanation:
Let x be the total number of pupils
we have x-(2/5*x-51)=3/7*x+147 ==> x=560
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