A, B এবং C যদি একটি কাজ যথাক্রমে 6 দিন, 9 দিন এবং 11 দিনে করতে পারে, তাহলে একসাথে কাজ করতে তাদের কত দিন লাগবে?

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SSC CGL 2023 Tier-I Official Paper (Held On: 27 Jul 2023 Shift 1)
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SSC CGL Tier 1 2025 Full Test - 01
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সম্পূর্ণ সমাধান:-

নিম্নরূপ A, B, এবং C এর কাজের হার বোঝায়

A এর কাজের হার = 1/6

B এর কাজের হার = 1/9

C এর কাজের হার = 1/11

মোট কাজ = A এর কাজ + B এর কাজ + C এর কাজ

মোট কাজ = (1/6) + (1/9) + (1/11)

⇒ (33/198) + (22/198) + (18/198) = 73 / 198

একসাথে কাজ শেষ করতে সময় লাগে = 1 / মোট কাজের হার

গৃহীত সময় = 1/ (73/198)

গৃহীত সময় = 198 / 73 =

∴ A, B, এবং C একসাথে কাজটি সম্পূর্ণ করতে দিন লাগবে।

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