题目

sat 史上最难最崩溃的题目.关键是我看不懂
看题：
Barb's motor scooter has a 2-gallon gas tank and can travel "m" miles on 1 gallon of gas.If gas costs $1.25 per gallon and Barb spends "d" dollars to fill the tank; which of the following represents the amount of gas,that was in the tank before she filled it?
选项：
A:2/1.25
B:(d/1.25) -2
C:2- (d/1.25)
D:2- (md/1.25)
E:2- {(m/d)/1.25}
别和我说排除法~
用了个很惊悚的题目,见谅
感谢回答的所有人

提问时间：2021-01-08

答案

想将题目给你翻译一下：Barb 的摩托车的油箱可以装2加仑汽油,并且1加仑汽油可以使车行驶m米.如果每加仑汽油要花费1.25美元,Barb 花了d美元来加他的油箱加满,下面那一个选项代表她加满油之前油箱中的汽油的总量.Barb...