A small about math question .（明白意思的就知道我要问啥）AB两车,A比B每时快12千米,他们同时从（A）甲（B）乙两地相对开出,A到乙后立即回折,几小时后A在距离甲地33千米处与B相遇?（要求些过程）重赏!

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