题库搜索>问题求解PS-12541
Of the families in City X in 1994, 40 percent owned a personal computer. The number of families in City X owning a computer in 1998 was 30 percent greater than it was in 1994, and the total number of families in City X was 4 percent greater in 1998 than it was in 1994. What percent of the families in City X owned a personal computer in 1998?
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1994年的时候，city X有40%的家庭拥有电脑【就设1994年有X个家庭，拥有电脑的家庭数目为0.4X】。
到了1998年，cityX拥有电脑的家庭的数目比1994年的时候多了30%【1998年拥有电脑的家庭数目增加了30%，达到0.4X * 1.3= 0.52X】
而1998年的总的家庭数目比1994年总的家庭数目多了4% 【1998年总的家庭数为1.04X】。
问题：在1998年时候，有百分之几的家庭拥有电脑？
0.65X/1.04X=50%
发奋杀鸡李秀根
解析数字也能打错？
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2021-09-04 17:58:10
默默
人数乘以拥有电脑的比例
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2018-06-17 05:59:50
默默回复默默
基年与现年的换算
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2018-06-17 06:13:17
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