दो व्यक्ति A और B भिन्न कार्य करते हुए एक इमारत को क्रमश: 6 और 10 घंटे में स्वच्छ कर सकते हैं। वे बारी-बारी से एक घंटे के स्ट्रेच में कार्य करते हैं। यदि A सुबह 8 बजे प्रारंभ करता है, तो कार्य कब समाप्त होगा?

This question was previously asked in
SSC CGL 2022 Tier-I Official Paper (Held On : 13 Dec 2022 Shift 3)
View all SSC CGL Papers >
  1. 9\(\frac{1}{3}\) घंटे
  2. 7\(\frac{1}{3}\) घंटे
  3. 6\(\frac{1}{3}\) घंटे
  4. 8\(\frac{1}{3}\) घंटे

Answer (Detailed Solution Below)

Option 2 : 7\(\frac{1}{3}\) घंटे
super-pass-live
Free
SSC CGL Tier 1 2025 Full Test - 01
3.3 Lakh Users
100 Questions 200 Marks 60 Mins

Detailed Solution

Download Solution PDF

दिया गया है:

व्यक्ति A एक इमारत को स्वच्छ कर सकता है = 6 घंटे में

व्यक्ति B एक इमारत को स्वच्छ कर सकता है = 10 घंटे में 

प्रयुक्त अवधारणा:

दक्षता × समय = कुल कार्य

गणना:

दक्षता व्यक्ति समय कुल कार्य
5 A 6 30
3 B 10

अब, प्रश्न के अनुसार:

⇒ (5 + 3) = 8 इकाई = 2 घंटे

⇒ 2 घंटे = 8 इकाई

इसलिए

⇒ 6 घंटे = 8 × 3 = 24 इकाई

7 घंटे में पूरा किया गया कार्य = 24 + 5 = 29 इकाई

शेष कार्य = 30 - 29 = 1 इकाई

1 इकाई कार्य B द्वारा 1/3 घंटे में पूरा किया जाता है।

कुल कार्य को पूरा करने में लगा कुल समय = 7\(1\over3\) घंटे

∴ सही उत्तर 7\(1\over3\) घंटे है।

Latest SSC CGL Updates

Last updated on Jul 12, 2025

-> The SSC CGL Application Correction Window Link Live till 11th July. Get the corrections done in your SSC CGL Application Form using the Direct Link.

-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.

-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.

->  Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.

-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.

-> The CGL Eligibility is a bachelor’s degree in any discipline.

-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.

-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.

-> The RRB Railway Teacher Application Status 2025 has been released on its official website.

-> The OTET Admit Card 2025 has been released on its official website.

More Work Efficiency Questions

More Time and Work Questions

Get Free Access Now
Hot Links: teen patti real teen patti master apk download teen patti bodhi teen patti master real cash