Question

一道GMAT data sufficiency 数学题，怎么翻译？

Last year in a group of 30 businesses, 21 reported a net profit and 15 had investments in a foreign markets. How many of the business did not report a net profit nor invest in foreign markets last year?
(1) Last year 12 of the 30 businesses reported a net profit and had investment in foreign markets?
(2) Last year 24 of the 30 businesses reported a net profit or invest in foreign markets, or both.

Answer 1

去年，在30家企业中，有21家有净收益，15家投资了海外市场。请问有多少家企业既无净收益也无海外市场的投资？
⑴去年，30家企业中的12家既有净收益又投资了海外市场。(原文在这里为什么用问号？你确定没打错？)
⑵去年，30家企业中，有净收益，或有海外市场投资，或两者都有的企业有24家。

追问

是句号。