and also use the "at" (at 20-70%), not off.

czhz · 2019-08-11 20:02:02Z

and also use the "at" (at 20-70%), not off.简介

来源: czhz 于 2019-08-11 20:02:02 [档案] [旧帖] [给我悄悄话] 本文已被阅读：次 (0 bytes)

回答: The problem description says x% discounted price, not x% off. 由 czhz 于 2019-08-11 19:52:12

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