Subject
Bank Exam
Topic
Standard Bank Ltd. - Trainee Assistant Officer - 2018
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is two-third of the number of students of 8 years of age which is 48. What is the total number of students in the school ?
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is two-third of the number of students of 8 years of age which is 48. What is the total number of students in the school ?
ক)
72খ)
80গ)
120ঘ)
100Explanation
Solution: প্রশ্নে বলা হচ্ছে যে, একটি স্কুলে 20% ছাত্রের বয়স 8 বছরের কম । 8 বছর বয়সী ছাত্রের সংখ্যা 48 জন । এই 48 এর 2/3 অংশ হলো 8 বছরের অধিক বয়সের ছাত্রের সংখ্যা । মোট ছাত্র কত ? 8 বছরের অধিক বয়সের ছাত্রসংখ্যা = 48 এর 2/3 = 32 জন এবং 8 বছর বয়সী ছাত্রের সংখ্যা = 48 জন মোট পরিমান = 48 + 32 = 80 জন এখন 8 বছরের কম বয়সী ছাত্রের মোট ছাত্রের 20% হলে 8 বছরের বেশি বা এর সমবয়সী ছাত্রের সংখ্যা হবে 80% অর্থাৎ 80% ছাত্র = 80 জন 100% ছাত্র = জনRelated questions
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