QUESTION 1 What must be added to each term of the ratio 2:3, so that it may become equal to 4:5? অনুপাত 2:3 ৰ প্ৰতিটো ম্যাদত কি যোগ কৰিব লাগিব,…

https://youtu.be/UZcBZcq40Y0QUESTION 1Teacher took exam for English, average for the entire class was 80 marks. If we say that 10% of the students scored 95 marks and 20% scored 90 marks…