Three fifths of patients have already died.

已经有五分之三的病人死亡了。

Three fifths of the work is hard to finish.

这工作的五分之三很难完成。

Three fifths of the population here are workers.

这里五分之三的人是工人。

About three fifths of the population here are farmers.

这儿大约有五分之三的人口是农民。

Three fifths of the population in our town are workers.

我们镇五分之三的人是工人。