The number of boys in Class 1 is girls (5/4), and the number of girls is the total number ((())/(())). If the total number of people in Class 1 is between 40 and 50, how many people are there in Class 1?
六1班男生人数是女生的(5/4)，女生人数是总人数的((())/(()))．如果六1班的总人数在40～50之间，那么六1班一共有多少人．
<result>45</result>