GWD24-32

[CherrieLi]

32. If 1/4 of the larger of two numbers is greater than 5 times the smaller of the same two numbers, is the smaller number less than 4?

(1) the larger number is greater than 70.
(2) the larger number is less than 80

答案是B

看不太懂題目的意思, 紅色字體部份讓我覺得很矛盾...

請問大家是怎麼算出來的呢?

[scottkidd]

主要就是有兩個數，其中一個比較大(the larger of two numbers )、另一個比較小(the smaller of the same two numbers)
可以把這兩個數設成x,Y ，x<Y
題目說 (1/4)Y>5x，要知道x有沒有小於4?

(2) the larger number is less than 80
(1/4)*80=20>5x，則可以確定x一定小於4