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题库 / Prep2007E1-PS-88
At a certain college there are twice as many English majors as history majors and three times as many English majors as mathematics majors. What is the ratio of the number of history majors to the number of mathematics majors?
6 to 1
3 to 2
2 to 3
1 to 5
1 to 6
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弄清楚谁是数的倍数，twice as many English majors as history majors，选英语的是历史的两倍，E=2H
twice as many English majors as history majors= English major is twice as many as history major
在表达倍数的时候，先说的那个放在等号的左边，后说的放在等号的右边，倍数加减，都发生在等号的右边
twice as many English majors as history majors的意思是：选英语的人是历史的两倍，也就是E=2H
同样选英语的是数学的3倍 E=3M
因此，H/M=3/2
选B