A और B एक कार्य को क्रमशः 25 दिनों और 18 दिनों में कर सकते हैं। A अकेले 4 दिन कार्य करता है और छोड़ देता है। शेष कार्य को पूरा करने के लिए B को कितने दिनों की आवश्यकता होगी?

This question was previously asked in
RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
View all RRB NTPC Papers >
  1. 15\(\frac{3}{26}\)
  2. 17\(\frac{4}{26}\)
  3. 16\(\frac{3}{25}\)
  4. 15\(\frac{3}{25}\)

Answer (Detailed Solution Below)

Option 4 : 15\(\frac{3}{25}\)
Free
RRB NTPC Graduate Level Full Test - 01
2.4 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

दिया गया है:

A कार्य को 25 दिनों में कर सकता है

B कार्य को 18 दिनों में कर सकता है

A, 4 दिन कार्य करता है और छोड़ देता है

गणना:

मान लीजिए कुल कार्य = 25 और 18 का LCM = 450 इकाई

A की दर = 450 ÷ 25 = 18 इकाई/दिन

B की दर = 450 ÷ 18 = 25 इकाई/दिन

⇒ A द्वारा 4 दिनों में किया गया कार्य = 4 × 18 = 72 इकाई

⇒ शेष कार्य = 450 − 72 = 378 इकाई

⇒ B के लिए समय = 378 ÷ 25 = 15\(\frac{3}{25}\) दिन

∴ B को कार्य पूरा करने में 15\(\frac{3}{25}\) दिन लगेंगे।

Latest RRB NTPC Updates

Last updated on Jul 17, 2025

-> RRB NTPC Under Graduate Exam Date 2025 has been released on the official website of the Railway Recruitment Board.

-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.

-> UGC NET Result 2025 out @ugcnet.nta.ac.in

-> HSSC CET Admit Card 2025 has been released @hssc.gov.in

-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here. 

-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.

-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.

-> Prepare for the exam using RRB NTPC Previous Year Papers.

-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here

->Bihar Police Driver Vacancy 2025 has been released @csbc.bihar.gov.in.

More Work Efficiency Questions

More Time and Work Questions

Get Free Access Now
Hot Links: teen patti game teen patti online teen patti cash teen patti winner teen patti joy mod apk