Subject
Bank Exam
Topic
Probashi Kallyan Bank Ltd (Senior Officer) - 09.10.2021
The number of students in 3 classes is in the ratio 2:3 :4.If 12 students are increased in each class this ratio changes to 8:11:14.The total number of students in the three classes in the beginning was
The number of students in 3 classes is in the ratio 2:3 :4.If 12 students are increased in each class this ratio changes to 8:11:14.The total number of students in the three classes in the beginning was
ক)
162খ)
108গ)
96ঘ)
54Explanation
প্রশ্নঃ- তিনটি ক্লাসের ছাত্র - ছাত্রীদের সংখ্যার অনুপাত 2:3:4 ।এখন প্রতিটি ক্লাসে ছাত্র - ছাত্রী সংখ্যা 12 জন করে বাড়লে অনুপাত হয় 8:11:14.ঐ তিনটি ক্লাসে ছাত্র - ছাত্রীর সংখ্যা যথাক্রমে 2x ,3x এবং 4x জন । উত্তরঃ- ∴ মোট ছাত্র - ছাত্রীর সংখ্যা =2x+3x+4x =9x জন প্রশ্নমতে , (2x+12)/(3x+12 ) =8/11 বা,2x=36 ∴x=18 জন ∴ শুরুতে মোট ছাত্র - ছাত্রী ছিল =9x =9×18 =162 জনRelated questions
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