Số học sinh khối 6 của 1 trường THCS là 280 em, xếp loại văn hóa cuối học kỳ I gồm các loại: Giỏi, khá, trung bình, yếu, không có học sinh kém. Số học sinh giỏi bằng tổng số học sinh, số học sinh khá chiểm 50% số học sinh còn lại. a) Tính số học sinh xếp loại giỏi, số học sinh xếp loại khá. b) Tính tổng số học sinh xếp loại trung bình và yếu. c) Biết 25% số học sinh xếp loại yêu là 3 em. Tính số học sinh xếp loại trung bình. Giúp mình vs ạ mai mình thi r 🙏 Mình hứa sẽ vote 5s vào trl hay nhất ạ

Các câu hỏi liên quan

II. Complete sentences with the past simple tense or the past progressive tense. 1. I ________________ (call) Mr Wilson at 9 last night, but he (not be)_________________at home. He (study) _______________ at the library 2. I _________________ (not hear) the thunder during the storm last night because I ________________ (sleep) 3. It was beautiful yesterday when we went for a walk in the park. The sun______________(shine). The birds_____________(sing) 4. My brother and sister ________________ (talk) about something when I ________________ (walk) into the room. 5. Tom went to his friends ‘house, but the boys ___________________ (not be) there. They (play)_____________soccer in the vacant lot down the street. 6. The little boy _______________ (fall) asleep while his mother___________________ (read) him a story. 7. I really enjoyed my holiday last January. While it_______________(snow) in Iowa, the sun ______________ (shine) in Florida. 8. While Ted _______________ (shovel) snow from his driveway yesterday, his wife _________________ (bring) him a cup of hot chocolate. 9. John _________________ (have) a car accident last week. He __________________ (drive) down the street when suddenly a lorry __________________ (hit) his car from behind. 10. Ten years ago, the government _______________ (decide) to begin a food programme. At that time, many people in the rural areas _______________ (starve) due to several years of drought. 11. They ___________________(wait) for me when I _________________ at the station (arrive) 12. She ________________ (swim) in the sea when I ___________________ her (see) 13. ___________________they__________________(play) tennis when it _________________ raining (start)? 14. We __________________ (drive) home from the theatre when the police __________________(stop) us. 15. The wind __________________ (blow) very hard when I ________________(go) out this morning. Mn giúp mk với. pls