The efficiency of Amar, Ujjwal, and Chitrakshi is 2 : 3 : 5. Amar alone can complete a work in 150 days. They all work together for 15 days and then Chitrakshi left the work, in how many days Amar and Ujjwal together can complete the remaining work?
1
38
2
35
3
40
4
36
5
None of these.