một xe máy khởi hành từ A đến B với vận tốc 36/km, sau đó 2 giờ ô tô khởi hành từ B đến A với vận tốc 48km/km, biết quãng đường AB dài 168km. hỏi sau bao lâu kể từ khi xe máy khởi hành thì 2 xe gặp nhau? điểm gặp nhau cách A bao nhiêu km? giải giúp em với em chọn câu trả lời hay nhất ạ

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C. WRITING I. Rewrite the sentences without changing the meaning. 1. We have languages. We use them for communication. If we didn’t ………………………………………………………………………… 2. Five students will be awarded a present. Their test results are excellent. Five ………………………………………………………………………………… 3. We have senses. They allow us to learn languages. If we didn’t ………………………………………………………………………… 4. Our sense of sight allows us to read the written language. If we didn’t ………………………………………………………………………. 5. They are looking for the girl and her dog. They have lost the way in the forest. They ……………………………………………………………………………………... II. Use the words or phrases given to write meaningful sentences about the ways to improve your spoken English in a conversation. 1. most important/ goal/ speaking English/ communicate. ……………………………………………………………………………………………………… 2. Although/ speaking English fast/ make/ you/ sound/ native speaker,/ it/ make/ other people/ difficult/ understand you. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 3. Thinking/ English/ thing/ you can practice/ all/ time/ because/ it/ really important/ when/ speak/ English. ……………………………………………………………………………………………………… 4. If you/ forget/ word/ we/ stop/ sentence/ middle/ or/ use/ other words/ describe it. ……………………………………………………………………………………………………… 5. Self-confidence/ help/ speak better/ every English conversation. ………………………………………………………………………………………………………