Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone in 50 days.	Choose the correct option:
A) 16 days.
B) 17 days.
C) 18 days.
D) 30 days.
E) 20 days.
They together completed 4/10 work in 4 days.   balance 6/10 work will be completed by Arun alone in   50*6/10= 
<gadget id="calculator">  50*6/10</gadget>
<output>30</output>
30 days.   ANSWER:30 days.
<result>D</result>
Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone in 50 days.