To do a certain work, the ratio of the efficiencies of A and B is 7 : 5. Working together, they can complete the work in 17.5 days. A alone will complete 60% of the same work in
किसी एक कार्य को करने के लिए A और B की कार्यक्षमता का अनुपात 7 : 5 है। दोनों मिलकर उस कार्य को 17.5 दिनों में पूरा कर सकते हैं। A अकेला उसी कार्य का 60% कितने दिनों में पूरा करेगा?
This Question Asked In:
SSC, CGL
Correct Answer :C - 20 Days
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Detailed Text Solution
Efficiency ratio A to B = 3 : 7
Total work = (3 + 7) × 10½
= 10 × (21/2)
= 105
Work done by both in 8 days = (3 + 7) × 8
= 10 × 8
= 80
Remaining work = 105 − 80
= 25
60% of the remaining work = 25 × (60/100)
= 15
60% of the remaining work A will complete in = 15 / 3
= 5 days