Subject
Bank Exam
Topic
Uttara Bank Limited (PO)-17.09.2021
The average of several exam scores is 80. One make-up exam was given. Included with the other scores, the new average was 84. If the score on the make up exam was 92, how many total exams were given?
The average of several exam scores is 80. One make-up exam was given. Included with the other scores, the new average was 84. If the score on the make up exam was 92, how many total exams were given?
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3খ)
2গ)
4ঘ)
5Explanation
মনেকরি, পরীক্ষা সংখ্যা = x প্রশ্নমতে, 84 (x + 1) - 80x = 92 ⇒ 84x + 84-80x = 92 ⇒ 4x = 8 ∴ x = 2 অতিরিক্ত 1টি পরীক্ষাসহ মোট পরীক্ষা = 2 + 1 = 3Related questions
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