RRB Technician Grade 3 previous year question
A can finish a work in 5 days and B can do the same work in 50 days. B worked alone for 10 days and left the job. In how many days can A alone finish the remaining work?
Asked in RRB Technician Grade 3 (06 Mar 2026 Shift 1) · Quantitative Aptitude
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Correct answer: (A) 4
B alone does 10/50 = 1/5 of the work in 10 days, leaving 4/5 of the work. A's rate is 1/5 per day, so A needs (4/5) / (1/5) = 4 days to finish the remaining work.
हिंदी में प्रश्न
A किसी कार्य को 5 दिन में पूरा कर सकता है और B उसी कार्य को 50 दिन में पूरा कर सकता है। B ने अकेले 10 दिन कार्य किया और फिर कार्य छोड़ दिया। A अकेले शेष कार्य को कितने दिनों में पूरा कर सकता है?
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सही उत्तर: (A) 4
B अकेले 10 दिनों में कार्य का 10/50 = 1/5 भाग पूरा करता है, शेष 4/5 भाग बचता है। A की दर 1/5 प्रति दिन है, इसलिए शेष कार्य पूरा करने में A को (4/5)/(1/5) = 4 दिन लगेंगे।
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