Question 1062074
At a certain school, 2/7
of the students are girls. Today, 2/3
of the girls brought their lunch. What fraction of the students are girls who brought their lunch today? 
How would I solve this?
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Let the number of students at the school be "x"::
# of girls = (2/7)x
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Equation:
# who brought their lunch = (2/3)[(2/7)x] = 4/21x
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Ans:: 4/21
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Cheers,
Stan H.