这个折扣让我们省下了50%的花费。

The discount saved us ___50 percent of the total cost.

这场比赛双方实力相当，胜负有五成的可能。

Both teams are equally strong, so there's a ___50-percent chance of winning.

他们各自持有该公司50%的股份。

They each own a ___50-percent share in the company.