IBPS RRB Office Assistant (Multipurpose) Prelims practice question
Rohit can complete a piece of work in 9 days and Divya can complete the same work in 11 days. Working together, in how many days will they complete the work?
From a IBPS RRB Office Assistant (Multipurpose) Prelims Reasoning practice set · Reasoning
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Correct answer: (D) 4.95 days
Rohit's 1-day work = 1/9; Divya's 1-day work = 1/11. Together, 1-day work = 1/9 + 1/11 = 99/20. So time taken = 20/99 = 4.95 days.
हिंदी में प्रश्न
Rohit एक काम को 9 दिनों में पूरा कर सकता है और Divya उसी काम को 11 दिनों में पूरा कर सकता है। दोनों मिलकर काम करें तो वे काम कितने दिनों में पूरा करेंगे?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 4.95 days
Rohit का 1 दिन का काम = 1/9; Divya का 1 दिन का काम = 1/11। दोनों मिलकर 1 दिन का काम = 1/9 + 1/11 = 99/20। अतः समय = 20/99 = 4.95 days।
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