2 sentences for 成 (chéng — tenth)

1. 今年的收成增产了二成。

   jīn​nián de shōu chéng zēng​chǎn le èr​chéng.

   This year's harvest increased by twenty percent.

   Source: Dong Chinese Dictionary

2. 产值比去年增加了一成强。

   chǎn​zhí bǐ qù​nián zēng​jiā le yī chéng qiáng.

   The output value increased by slightly more than ten percent over last year.

   Source: Dong Chinese Dictionary