RPF Constable previous year question
A can complete a work in 12 days and B can complete it in 15 days. In how many days will they complete the work together?
Asked in RPF Constable 2025: Shift 23 · Quantitative Aptitude
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Correct answer: (D) 6 2/3 days
Combined rate = 1/12 + 1/15 = 5/60+4/60 = 9/60 = 3/20 of work per day. Time = 20/3 = 6 2/3 days.
हिंदी में प्रश्न
A किसी काम को 12 दिनों में पूरा कर सकता है और B उसे 15 दिनों में पूरा कर सकता है। दोनों मिलकर काम कितने दिनों में पूरा करेंगे?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 6 2/3 दिन
संयुक्त दर = 1/12 + 1/15 = 5/60+4/60 = 9/60 = 3/20 प्रति दिन। समय = 20/3 = 6 2/3 दिन।
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