A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in :

A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in : Correct Answer 6 days

ধরি, B এর সময় লাগে x দিন A এর সময় লাগে 2x দিন এবং, C এর সময় লাগে y দিন A এর সময় লাগে 3y দিন এখন, 2x = 3y y = 2x/3 A : B : C = 2x : x : 2x/3 = 6x : 3x : 2x A,B,C একত্রে 1 দিনে করে ( 1/6x + 1/3x + 1/2x) = 1/x অংশ 1/x = 1/2 x = 2 B কাজটি করে ( 3 × 2) = 6 দিনে।
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