作业帮gmat og的上的题目,新手提问1)a marketing firm determined that, of 200 household surveyed 80 used neither brand A nor brand B soap, 60 used only brand A soap, 3 used only brand B soap.How many of the 200 households surveyed used both brands of
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gmat og的上的题目,新手提问1)a marketing firm determined that, of 200 household surveyed 80 used neither brand A nor brand B soap, 60 used only brand A soap, 3 used only brand B soap.How many of the 200 households surveyed used both brands of
gmat og的上的题目,新手提问
1)a marketing firm determined that, of 200 household surveyed 80 used neither brand A nor brand B soap, 60 used only brand A soap, 3 used only brand B soap.How many of the 200 households surveyed used both brands of soap?A 15 B 20 C30 D40 E45
2)If s and t are positive integers such that s/t =64.12, which of the following could be the remainder when s is divided by t?A 2 B 4 C 8 D20 E 45
我估计是我没理解这题目,请各位帮忙,谢谢了~~越详细越好,需要加分也可以~~
gmat og的上的题目,新手提问1)a marketing firm determined that, of 200 household surveyed 80 used neither brand A nor brand B soap, 60 used only brand A soap, 3 used only brand B soap.How many of the 200 households surveyed used both brands of
1）一家销售公司经调查发现,200名用户中,有80名从不用A牌子或B牌子的肥皂,60名仅用A牌子的肥皂,3名仅用B牌子的肥皂.问,200名调查用户中有多少名同时用两种牌子的肥皂.
那么200－80－60－3＝57?额,为什么答案没有呀＝ ＝
是不是题目印错了,应该是30名仅用B牌子的肥皂?因为用A得都有60人了,用B的不可能骤降到个位数吧～
这样的话是200－80－60－30＝30 正好是C答案?
2）如果s/t都是正整数,且s/t=64.12那么,如果s被t整除余多少?
因为s被t整除为64,小数为0.12,则余数x应该为0.12×t,且余数为整数（因为s,t都是整数）,t=x/0.12也为整数.答案中2/0.12,4/0.12,20/0.12,45/0.12只有D,45/0.12答案为375为整数,所以应该为D答案.