Read the following SAT test question and then click on a button to select your answer.
In the US House of Representatives, about 12.2% of the representatives are from the state of California .If there are 435 representatives, how many are not from California?
subtract [s?b'tr?kt] vt. 扣掉
equation [i'kwei??n] n. 相等，方程(式), 等式，均衡
multiple ['m?ltipl] adj. 许多，多种多样的
variable ['v??ri?bl] adj. 可变的，易变的
determine [di't?:min] v. 决定，决心，确定，测定
Choice C is correct. Use the variable r to represent the number of representatives from California, set up an equation to determine how many representatives are from California.
0.122*435=r, and so r=53.07
There are 53 representatives from California.
To find the number of representatives not from California, subtract the number of representatives from California from the total number of representatives.
Therefore, 382 of the representatives are not from California.