Subject
Bank Exam
Topic
United Commercial Bank Ltd. - Probationary Officer - 2016
Today Jishan is twice-as old as Farid and Samsu is 2 years younger than Farid. Four years ago Jishan was 4 times as old as Samsu. How old is Jishan now ?
Today Jishan is twice-as old as Farid and Samsu is 2 years younger than Farid. Four years ago Jishan was 4 times as old as Samsu. How old is Jishan now ?
ক)
8খ)
12গ)
16ঘ)
20Explanation
Solution: অনুবাদঃ বর্তমানে Jishan এর বয়স Farid এর বয়সের দ্বিগুণ এবং Samsu এর বয়স Farid এর চেয়ে দুই বছরের কম । চার বছর পূর্বে Jishan এর বয়স Samsu এর বয়সের চারগুণ ছিলো । Jishan এর বর্তমান বয়স কত ? মনে করি, Farid এর বর্তমান বয়স x বছর Jishan এর বর্তমান বয়স 2x বছর Samsu এর বর্তমান বয়স (x - 2) বছর প্রশ্নমতে, 2x - 4 = 4 (x - 2 - 4) => 2x - 4 = 4x - 24 => 2x = 20 x = 10 Jishan এর বর্তমান বয়স 2x = 2 10 = 20 বছর । Exam Shortcut: Farid Jishan Samsu 4 years ago, Jishan = 4 Samsu বর্তমানে Jishan = 2x x 2x (x - 2) 2x - 4 = 4(x - 2 - 4) => x = 10 2 10 = 20Related questions
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