A can do a piece of work in 9 days, B can do it in 12 days and C can do it in 30 days. The efficiency of D is given to be twice the efficiency of C. If A worked for 1 day, B worked for 2 days and C worked for 3 days. Find the number of days D will take to complete the remaining work alone?

• ক 23/3 days
• খ 25/3 days
• গ 20/3 days
• ঘ 28/3 days ✅ সঠিক উত্তর