Subject
Bank Exam
Topic
City Bank Ltd. - Probationary Officer - 2016
Rahim averaged 70 in his first m. number of exams. After taking n more exams, he had an overall average of 75. In terms of m and n, his average for the last n exams was
Rahim averaged 70 in his first m. number of exams. After taking n more exams, he had an overall average of 75. In terms of m and n, his average for the last n exams was
ক)
\(\frac{{5m + 75}}{n}\)খ)
\(\frac{{5m}}{n} + 75\)গ)
\(\frac{{5n}}{m} + 75\)ঘ)
\(\frac{{70m + 75n}}{{m + n}}\)Explanation
Solution: অনুবাদঃ Rahim এর প্রথম m টি পরীক্ষার নম্বরের গড় ছিল 70. আরো n টি পরীক্ষার পর মোট পরীক্ষার উপর তার গড় নম্বর হলো 75. m এবং n সাপেক্ষে তার শেষ n টি পরীক্ষায় গড় কত ছিলো ? ধরি, শেষ n টি Exams এর Average হলো A 2 , তাহলে প্রশ্নমতে, 75 = => 75m + 75n = 70m + A 2 n => 5m + 75n = A 2 n A 2 =Related questions
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