Một trường phổ thông có ba lớp 7, tổng số học sinh của hai lớp 7A và 7B là 85 học sinh. Nếu chuyển 10 học sinh 7A sang 7C thì số học sinh ba lớp sẽ tỉ lệ thuận với 7, 8, 9. Tính sô học sinh của mỗi lớp Giúp mk vs. Đang cần gấp

Các câu hỏi liên quan

I. Write the correct form or tense of the verbs in brackets. 1. Just a minute, l can't hear you. l...................................................................................(listen) to the radio. 2. Susan often...............................(drive) to, the beach when the weather.....................................(be) nice. 3.It..........................................................................(snow) quite hard-perhaps we shouldn't go out tonight. 4.The student................................................................(not prepare) for the science exam at the moment. 5.How often...................................................................................................(you/go) to the gym to work out? 6.Every day his father often................................................(go) to work at seven o'clock by his motorbike. 7.The teacher ...................(read) the dialogue at the moment and we..................................(listen) to him. 8.There...............................................................................................(be) twenty classrooms in Hoa's school. 9.Lien ........................(not play) chess but she ........................(play) volleyball with her friends on sunday. 10.Where ..........................................(be) Mai?-She (play)............................................................in the garden. II. Use the given words to write the complete sentences. 1. Some creative student / do drawings / art club now. ................................................................................................................................................................................. 2.We / have / good teachers / they / help student / get interested / subject →............................................................................................................................................................................. 3. She / work / as / volunteer teacher / village and everyone / love / her → ............................................................................................................................................................................. 4. Please / close / your books / say / good bye / your classmates. →.............................................................................................................................................................................. 5.There / not / beautiful garden / left / Ba's house. → ............................................................................................................................................................................. 6. He / live / city center / uncle / aunt. →.............................................................................................................................................................................. 7. We / visit / milk farm / do / treasure hunt / field / tomorrow. → ............................................................................................................................................................................. 8. She / do / aerobics / three times / week → .............................................................................................................................................................................. 9. Every day she / often go / work / seven o'clock / her motorbike. →............................................................................................................................................................................... 10. She / know / lot / history / and / we / chat / it / hours. →..............................................................................................................................................................................