2026年6月国际D卷练习 · 第 18 题

2026年6月国际D卷练习 · 原库模块 2 · Q18 参考答案

The table shows the distribution of two types of trees at two different sites. If a tree represented in the table is selected at random, what is the probability of selecting a tree from site A, given that the tree is a red maple? (Express your answer as a decimal or fraction, not as a percent.)