Each of the students in a certain class received a single grade of P,F or I.What percent of the students in the class were females?(1) of those who received a P,40% were females.(2) of those who received either an F or I,80% were males.E
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![Each of the students in a certain class received a single grade of P,F or I.What percent of the students in the class were females?(1) of those who received a P,40% were females.(2) of those who received either an F or I,80% were males.E](/uploads/image/z/14109480-0-0.jpg?t=Each+of+the+students+in+a+certain+class+received+a+single+grade+of+P%2CF+or+I.What+percent+of+the+students+in+the+class+were+females%3F%281%29+of+those+who+received+a+P%2C40%25+were+females.%282%29+of+those+who+received+either+an+F+or+I%2C80%25+were+males.E)
Each of the students in a certain class received a single grade of P,F or I.What percent of the students in the class were females?(1) of those who received a P,40% were females.(2) of those who received either an F or I,80% were males.E
Each of the students in a certain class received a single grade of P,F or I.What percent of the students in the class were females?
(1) of those who received a P,40% were females.
(2) of those who received either an F or I,80% were males.
E
Each of the students in a certain class received a single grade of P,F or I.What percent of the students in the class were females?(1) of those who received a P,40% were females.(2) of those who received either an F or I,80% were males.E
条件一:不解释
条件二:假设公司F员工共a名,P员工共b名,如下表
X Y
F >a/2 a/b