The number of girls in the sixth grade of a certain school is the number of boys (4/5), ___, how many students are there in the sixth grade? (Please add a condition and then formulate the answer)
某校六年级的女生人数是男生的(4/5)，___，六年级共有学生多少人？(请你补充一个条件后再列式解答)
<result>150</result>