Subject
Bank Exam
Topic
Joint Recruitment Test for 8 Banks (SO) [03-09-2019, AUST
[ Read the following questions carefully and choose the right answer. ]The average age of a group of 15 employees is 24 years, If 5 more employees join the group, the average age increases by 2 years. Find the average age of the new employees .
[ Read the following questions carefully and choose the right answer. ]The average age of a group of 15 employees is 24 years, If 5 more employees join the group, the average age increases by 2 years. Find the average age of the new employees .
ক)
32খ)
30গ)
24ঘ)
32Explanation
প্রশ্নে বলা হচ্ছে, 15 জন শ্রমিকের গড় বয়স 24 বছর । ঐ গ্রুপে আরো 5 জন শ্রমিক যোগদান করলে গড় বয়স 2 বছর বেড়ে যায় । নতুন ঐ 5 জন শ্রমিকের গড় বয়স কত ? 15 জন শ্রমিকের বয়সের সমষ্টি = 15×24 = 360 বছর 5 জন নতুন শ্রমিক ঐ গ্রুপে যোগ দিলে মোট শ্রমিক সংখ্যা হয় = 15+5 = 20 জন । এক্ষেত্রে তাদের গড় বয়স বেড়ে দাঁড়ায় = 24+2 = 26 বছর 20 জন শ্রমিকের বয়সের সমষ্টি = 26×20 = 520 বছর নতুন 5 জন শ্রমিকের বয়সের সমষ্টি = 52-360 = 160 বছর নতুন 5 জন শ্রমিকের বয়সের গড় = 160/5 = 32 বছর ।Related questions
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