Subject
Govt.Jobs
Topic
বিসিআইসি (সহকারী ব্যাবস্থাপকঃ প্রশাসন) - ১৩.০৫.২০২২
Rakib scored 87 on his 17th class test ,increasing his average score by 3. What is Rakib's average score after this test?
Rakib scored 87 on his 17th class test ,increasing his average score by 3. What is Rakib's average score after this test?
ক)
42খ)
40গ)
39ঘ)
36Explanation
ধরি 6 ইনিংসের গড় রান =x ∴ 16 " মোট " =16x তাহলে ,17 " " =16x+87 আবার , 17 ইনিংসের গড় রান =x+3 ∴ 17 ইনিংসের মোট রান=17(x+3) প্রশ্নমতে , 17(x+3)=16x+87 বা,17x+51=16x+87 বা,x=36 অতএব, 17 ইনিংসের পর গড় রান =36+3 =39Related questions
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