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  3. Aisha’s income in 2004 was 20 percent greater than her income in 200What is the ratio of Aisha’s income in 2004 to her income in

Aisha’s income in 2004 was 20 percent greater than her income in 200What is the ratio of Aisha’s income in 2004 to her income in

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问题 Aisha’s income in 2004 was 20 percent greater than her income in 200What is the ratio of Aisha’s income in 2004 to her income in 2003 ?
选项 A、1 to 5
B、5 to 6
C、6 to 5
D、5 to 1
E、20 to 1
答案C
解析 Because Aisha’s income in 2004 was 20% greater than her income in 2003, her income in 2004 was equal to
         (100% of her income in 2003)+(20% of her income in 2003)
which is 120% of her income in 2003. Therefore, the ratio of her income in 2004 to her income in 2003 is 120 to 100, which is equivalent to 6 to 5. The correct answer is Choice C.
    Alternatively, to say that Aisha’s income in 2004 was 20% greater than her income in 2003 is the same as saying that her income increased by 1/5. Therefore, her income in 2004 was 6/5 of her income in 2003, and the ratio of her income in 2004 to her income in 2003 is 6 to 5. The correct answer is Choice C.
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