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একই ক্ষমতার 15টি নল ব্যবহার করে একটি জলের ট্যাঙ্ক 9 মিনিটে ভরাট করা হয়। উপরের মত একই ধারণ ক্ষমতার 20টি নল ব্যবহার করলে কত মিনিটে জলের ট্যাঙ্ক পূর্ণ হবে?

This question was previously asked in
RRB Group D 28 Sept 2022 Shift 3 Official Paper
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  1. 10
  2. 6.75
  3. 13
  4. 18

Answer (Detailed Solution Below)

Option 2 : 6.75
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প্রদত্ত:

15টি নল 9 মিনিটে একটি ট্যাঙ্ক পূরণ করতে পারে।

অনুসৃত ধারণা:

M1T1 = M2T2

গণনা:

সূত্র অনুযায়ী

⇒ 15 x 9 = 20 x T2

⇒ T2 = 135 / 20 = 6.75 মিনিট

⇒ সুতরাং, 20টি নল 6.75 মিনিট সময় নেবে।

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Last updated on Jul 17, 2025

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Exam Date will be announced on the official website. It is expected that the Group D Exam will be conducted in August-September 2025. 

-> The RRB Group D Admit Card 2025 will be released 4 days before the exam date.

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a NAC granted by the NCVT.

-> Check the latest RRB Group D Syllabus 2025, along with Exam Pattern.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

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