Question
Download Solution PDFरश्मी जेव्हा 15 किमी/ताशी वेगाने प्रवास करते तेव्हा ती तिच्या शाळेत 30 मिनिटांनी उशीरा पोहोचते आणि जेव्हा ती 20 किमी/ताशी वेगाने प्रवास करते तेव्हा ती वेळेवर पोहोचते, तर 12 किमी/ताशी वेगाने तिच्या शाळेत जाण्यासाठी लागणारा वेळ शोधा.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेल्याप्रमाणे:
जेव्हा रश्मी 15 किमी/ताशी वेगाने प्रवास करते तेव्हा ती 30 मिनिटांनी तिच्या शाळेत उशीरा पोहोचते आणि जेव्हा ती 20 किमी/ताशी वेगाने प्रवास करते तेव्हा ती वेळेवर पोहोचते
वापरलेले सूत्र:
वेळ = अंतर/वेग
गणना:
घेतलेला वेळ 't' होऊ द्या
अंतर 'D' असू द्या
प्रश्नानुसार
D/20 = t .... (1)
D/15 = t + (1/2) .... (2) (30 मिनिटे = 1/2 तास)
समीकरण 2 मधून 1 वजा करु
(D / 15) - (D / 20) = 1/2
⇒ D / 60 = 1/2
⇒ D = 30 किमी
ताशी 12 किमी/ताशी वेगाने 30 किमी वर पोहोचण्याची वेळ
वेळ = 30/12 = 2.5
∴ योग्य पर्याय हा पर्याय 3 असेल
Last updated on Jun 23, 2025
-> RRB NTPC Exam Analysis 2025 is LIVE now. All the candidates appearing for the RRB NTPC Exam 2025 can check the complete exam analysis to strategize their preparation accordingly.
-> The RRB NTPC Admit Card 2025 has been released on its official website.
-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.
-> The RRB NTPC CBT 1 Exam is scheduled from 5th June to 24th June 2025 as per the revised tentative exam schedule.
-> The RRB NTPC 2025 Notification has been 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.