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SAT官方每日一题附答案和解析[数学](2020年6月3日)
日期:2020-06-03 08:36

(单词翻译:单击)

每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

A doctor orders 300 milliliters (mL) of a certain medicine at a 40% solution. The pharmacy has the medicine available only in 50% and 25% solution. The pharmacist will mix xmL of the 50% solution with ymL of the 25% solution to obtain the desired 40% solution. Which of the following is the value of x?

A.40
B.120
C.180
D.260

答案和解析

答案:C

解析:

Choice C is correct.

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