Surjeet, Saraf and Akshay started working on a task, where the ratio of efficiencies is 7 ∶ 3 ∶ 5 respectively, but now Surjeet work for only three days and the remaining work is completed by Saraf and Akshay alone. Now the work will be completed in how many days?
1
3 days
2
10.5 days
3
7 days
4
15.5 days
5
8.5 days