alleryಎರಡು ಪೈಪ್ಗಳು 20 ಮತ್ತು 30 ಗಂಟೆಗಳಲ್ಲಿ ಒಂದು ಟ್ಯಾಂಕ್ ಅನ್ನು ತುಂಬುತ್ತವೆ ಮತ್ತು ಮೂರನೆಯದು 60 ಗಂಟೆಗಳಲ್ಲಿ ಅದನ್ನು ಖಾಲಿ ಮಾಡುತ್ತದೆ. ಎಲ್ಲವೂ ತೆರೆದಿರುತ್ತದೆ, ಅದು ತುಂಬುತ್ತದೆ
A15 ಗಂಟೆಗಳು
B18 ಗಂಟೆಗಳು
C10 ಗಂಟೆಗಳು
D12 ಗಂಟೆಗಳು
Answer & Solution
Correct answer: A. 15 ಗಂಟೆಗಳು
ನಿವ್ವಳ ದರ 3/60 + 2/60 - 1/60 = 4/60 = 1/15 ಪ್ರತಿ ಗಂಟೆಗೆ, ಆದ್ದರಿಂದ 15 ಗಂಟೆಗಳು.
Keep practising Time and Work
Browse all Time and Work questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
What labor metric denotes the amount of work done by an average worker in a day?How is task time found from man-hours and worker count?If a task requires 20 man-hours, how many hours will a team of 2 workers take?A takes 12 days and B takes 24 days. A leaves 3 days before the work ends. Total time wasA does a job in 16 days, B in 8 days. A works 4 days alone, then B joins. Total time from A alone does a job in 9 days and B alone in 18 days. They earn Rs 900 together. A's share Sita does a job in 30 days. Sita and Tara together do it in 20 days. Tara alone needsA pipe alone fills a tank in 15 minutes; with a second pipe it takes 6 minutes. The second