Re: [計量] CAT test6
※ 引述《sqaure (sqaure)》之銘言：
: 11.What is the difference between the sum of the first 2003 positive
: even integers and the sum of the first 2003 positive odd integers?
: ans : 2003
: 26.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?
: ans: 50%
% # of Families # of families owning a pc
1994 40 1 0.4
1998 ? 1.04 (4%) 0.52 (0.4*1.3) (30%)
所以 ? = 0.52/1.04 = 50%
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11/07 20:42, , 1F
11/07 20:42, 1F
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