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A classroom of 32 students contains an equal number of boys and girls. when two boys rush out to visit a restroom, and several girls run out to chat, that leaves twice as many boys as girls in the classroom. Now, the class has ( 12, 14, 7, 18 ) boys and ( 7, 14, 16, 17 ) girls and the total number of students at present in the classroom is ( 12, 18, 19, 21 )