Last year, sales at Company X were 10% greater in February than in January, 15% less in March than in February, 20% greater in April than in March, 10% less in May than in April, and 5% greater in June than in May. In which month were sales closest to the sales in January?
就是May。对应的一月应该是“单位一”才对。
假设1月销售额是J，2月就是是1.1J， 3月是0.85*1.1J=0.935J, 4月是1.2*0.935J=1.122J, 5月是0.9*1.122J=1.0098J。6月没必要算了，比五月还多是不可能更接近于J的。
我感觉你审错题了吧应该是，sales at Company X were 10% greater in February than in January说的是X公司2月份的销售额比1月份增长了10%，【10% GREATER IN A THAN IN B：B=(1+10%)A 】。
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发表于 2019-12-22 11:16:00
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