A একটি কাজ 8 দিনে করতে পারে, যখন B এটি 18 দিনে করতে পারে। যদি তারা B-কে দিয়ে শুরু করে বিকল্প দিনে কাজ করে, তাহলে কত দিনে কাজ শেষ হবে?

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SSC CGL 2023 Tier-I Official Paper (Held On: 21 Jul 2023 Shift 4)
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  1. 11
  2. 12
  3. 10
  4. 10

Answer (Detailed Solution Below)

Option 1 : 11
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PYST 1: SSC CGL - English (Held On : 11 April 2022 Shift 1)
25 Qs. 50 Marks 12 Mins

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প্রদত্ত:

A একটি কাজ 8 দিনে করতে পারে, যখন B এটি 18 দিনে করতে পারে।

অনুসৃত ধারণা:

দক্ষতা = (মোট কাজ / মোট গৃহীত সময়)

দক্ষতা = এক দিনে সম্পন্ন কাজ

গণনা:

ধরা যাক, মোট কাজ হল 72 একক (8 এবং 18 এর ল.সা.গু)

A-এর দক্ষতা 72/8 = 9 একক 

B-এর দক্ষতা 72/18 = 4 একক 

2 দিনে তারা কাজ করে 9 + 4 = 13 একক 

তারা65 একক কাজ করে 5×2 = 10 দিনে 

তারপর B 1 দিনে 4 একক কাজ করে

তারপর A 1/3 দিনে 3 একক কাজ করে

মোট দিনসংখ্যা হবে 10 + 1 + 1/3 = 11">3434Unknown node type: span34Unknown node type: span

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