[計量] At a sale, the cost of each tie ...
有兩題計量想請教各位怎麼算
先謝謝了
1. At a sale, the cost of each tie was reduced by 20 percent and the cost of e
ach belt was reduced by 30 percent.
Column A
The percent reduction on the total cost of 1 tie and 2 belts
Column B
25%
ans: 我是選 B (A < B)，但答案卻是 D (無法判斷)
2. For the line with equation y=ax+b, ab < or > 0, the x-intercept is twice the
y-intercept.
Colunmn A
The slope of the line
Column B
1/2
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