SBI PO Prelims practice question
Priya can complete a piece of work in 21 days and Kavita can complete the same work in 14 days. Working together, in how many days will they complete the work?
From a SBI PO Prelims Reasoning practice set · Reasoning
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Correct answer: (A) 8.4 days
Priya's 1-day work = 1/21; Kavita's 1-day work = 1/14. Together, 1-day work = 1/21 + 1/14 = 42/5. So time taken = 5/42 = 8.4 days.
हिंदी में प्रश्न
Priya एक काम को 21 दिनों में पूरा कर सकता है और Kavita उसी काम को 14 दिनों में पूरा कर सकता है। दोनों मिलकर काम करें तो वे काम कितने दिनों में पूरा करेंगे?
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उत्तर और व्याख्या देखें
सही उत्तर: (A) 8.4 days
Priya का 1 दिन का काम = 1/21; Kavita का 1 दिन का काम = 1/14। दोनों मिलकर 1 दिन का काम = 1/21 + 1/14 = 42/5। अतः समय = 5/42 = 8.4 days।
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