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Today jishan is twice as old as Farid and Samsu is 2 younger than Farid four years ago Jishan was 4 times as old as Samu. How old is Jishan now?

Today jishan is twice as old as Farid and Samsu is 2 younger than Farid four years ago Jishan was 4 times as old as Samu. How old is Jishan now? Correct Answer 20

ধরি, Farid - এর বর্তমান বয়স x বছর ∴ - এর বতমান বয়স 2x বছর ∴ Samsu - এর বতমান বয়স (x - 2) বছর ∴ 2x - 4 = 4 (x - 2 - 4) ⇒ 2x - 4 = 4 (x - 6) ⇒ 2x - 4 = 4x - 24 ⇒ 2x = 20 ⇒ x = 10 ∴ Jishan - এর বতমান বয়স 2x = 2×10 = 20 বছর

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