【官方】SAT数学每日一题附答案和解析(2018年2月5日)

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每日一练：数学

MathematicsStandard Multiple Choice

Read the following SAT test question and thenclick on a button to select your

answer.

In the US House of Representatives, about 12.2% ofthe representatives are

from the state of California. If there are 435 representatives, how many are not

from California?

A.12.2

B.53

C.382

D.488

答案：C

解析：

Choice C is correct. Use the variable r to representthe number of

representatives from California, set upan equation to determine how

manyrepresentatives 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 ofrepresentatives from California from the total number of

representatives.

435-53=382

Therefore, 382 of the representatives are not from California.