There are 200 students in the fifth and sixth grades of a certain school. There are 11 students in the fifth grade and 25% of the students in the sixth grade go to the city to participate in the celebration on Children's Day. At this time, the remaining numbers of the two grades are equal. How many students are there in the sixth grade?
某校五、六年级共有学生200人．"六一"儿童节五年级有11人，六年级有25%的同学去市里参加庆祝活动，这时两个年级余下的人数相等．求六年级有学生多少人？
<result>108</result>