[求助] prep數學中有關"比例表達"的問題

請問nn有啥方法去比較好理解英語中倍數的表達呢? 另外這兩題該怎麼理解?

Thanks!!!!!!!!!!

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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?

(A) 6 to 1

(B) 3 to 2

(C) 2 to 3

(D) 1 to 5

(E) 1 to 6

A certain scholarship committee awarded scholarships in the amounts of $1,250, $2,500, and $4,000.  The committee awarded twice as many $2,500 scholarships as $4,000 scholarships, and it awarded three times as many $1,250 scholarships as $2,500 scholarships. If a total of $37,500 was awarded in $1,250 scholarships, how many $4,000 scholarships were awarded?

(A)  5

(B)  6

(C)  9

(D) 10

(E) 15

there are twice as many X as Y. 相对应的意思是说X是Y的两倍.

比如你的题目1)意思是说 english major 是 histroy major 的两倍, english major 是mathematic major  的三倍,求 histroy major 与mathematic major 的比例.