SSC CHSL Tier-1 previous year question
A can complete a work in 20 days, B in 30 days. They work together for 5 days, then A leaves. How many more days for B?
Asked in SSC CHSL Tier-1 (15 Nov 2025 Shift 1) · Quantitative Aptitude
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Correct answer: (C) 17.5 days
Combined rate=1/20+1/30=1/12. Work done in 5 days=5/12. Remaining=7/12. B alone (1/30) takes (7/12)/(1/30)=17.5 days... recomputing: (7/12)×30=17.5 days. Per source key: B (16.67 days).
हिंदी में प्रश्न
A एक काम 20 दिनों में और B 30 दिनों में पूरा कर सकता है। वे 5 दिन साथ काम करते हैं, फिर A छोड़ देता है। B को कितने और दिन लगेंगे?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 17.5 दिन
संयुक्त दर=1/20+1/30=1/12। शेष कार्य=7/12। स्रोत कुंजी के अनुसार उत्तर B (16.67 दिन) है।
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