Subject
Bank Exam
Topic
Joint Recruitment Test for 7 Banks and Financial Institutions - (Senior Officers) - 05.11.2021
A school has only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. Find the percentage of passed students of the entire school.
A school has only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. Find the percentage of passed students of the entire school.
ক)
40খ)
50গ)
60ঘ)
30Explanation
১ম ক্লাসে পাশ করে =20 এর 30% =20 × 30/100 =6 জন ২য় ক্লাসে পাশ করে =30 এর 50% =30 × 50/100 =15 জন ৩ য় ক্লাসে পাশ করে =40 এর 60% =40× 60/100 =24 জন ∴ মোট পাশ করে =6+14+24=45 জন এবং মোট ছাত্র -ছাত্রী সংখ্যা 20+30+40+ জন =90 জন ∴ শতকরা পাস করে 45/90× 100% =50%Related questions
Given the equations below, what is the value of mn?2(m+n)+ m = 9; 3m – 3n = 24‘অল্পপ্রাণ’ যে সমাসের উদাহরণ?The height of a cylinder is four times the radius of the cylinder. If the volume of the cylinder is 256π cm2, what is the radius of the cylinder?বাংলা লোকসাহিত্য সংশ্লিষ্ট ‘আলকাপ’ হলো এক প্রকার?A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to 8 times itself?নিচের যে বাগধারাটি অপর তিনটি থেকে বিসদৃশ?If a principal P becomes Q in 2 years when interest R% is compounded half-yearly. And if the same principal P becomes Q in 2 years when interest S% is compound annually, then which of the following is true.সৈয়দ ওয়ালীউল্লাহ্-র ইংরেজি ভাষায় লিখিত একটি রচনা হলো?