评论
打印
考试类型: Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
A jar contains only red marbles and green marbles. If a marble is selected at random from the jar, the probability that a red marble will be selected is 2/3. If there are 36 green marbles in the jar, how many red marbles are there in the jar?
A. 18
B. 24
C. 54
D. 72
E. 108
